Best Baby Bottles

reviewed mark Medically Reviewed by Gina Posner, M.D., F.A.A.P.  | May 4, 2023
Best Baby Bottles

Quick Summary

The best baby bottles are Philips Avent Natural Glass Baby Bottle, according to a poll of more than 1,500 What to Expect community parents who voted in our 2022 What to Expect Feeding Awards and testers from the What to Expect staff. When choosing a baby bottle, medical professionals and parents say the most important factors to consider are material, bottle next width, bottle shape and nipple size.
Best Baby Bottles

Baby bottles are a definite registry must-have, but with so many options on the market, it can be hard to figure out where to start. What’s more, many parents are surprised by how difficult it can be to find a bottle that your baby will happily drink from.

How we chose the best baby bottles

“Once you find a bottle that your baby has taken to, you can stick to that bottle,” says Micah Resnick, M.D., a board-certified pediatrician in Cincinnati, Ohio, with TriHealth and member of the What to Expect Medical Review Board. 

As a mom of two, I can attest to the fact that different babies prefer different shapes, sizes and textures when it comes to bottles. My suggestions: Buy a few types of bottles and test each bottle a couple of weeks before declaring it a failure. “Sometimes babies will learn coordination by struggling and muddling through the process,” says Dr. Renick. 

But buying a variety of bottles can be expensive. To help narrow down your selection, the pediatrician and lactation consultant we spoke to recommended evaluating bottles based on the following factors:

  • Bottle material: Per the American Academy of Pediatrics (AAP) and the Centers for Disease Control and Prevention, all bottles should be free from bisphenol A (BPA), an industrial chemical that is in certain types of plastics and is thought to be harmful for humans.
  • Bottle neck width: Although bottle neck width mostly comes down to preference, different types offer pros and cons. Wide-neck bottles, for example, best resemble the breastfeeding experience and may be best suited for combo or breastfed babies. Meanwhile, angle-neck bottles prevent air from filling the nipple, which may lead to a less gassy baby. 
  • Bottle shape: If your baby is especially gassy, Dr. Resnick says you should consider a curved bottle. Similar to an angle-neck bottle, Dr. Resnick says the shape may help reduce how much air your little one swallows, which may lead to less gas and fussiness.
  • Nipple size: The size of the nipple determines the milk’s flow rate, which can impact your child’s digestion. “Nipples that release milk too quickly can cause your baby to swallow more air,” says Suzanne Chan, D.N.P., C.L.C., C.P.S.T., a certified lactation consultant and board-certified pediatric nurse practitioner at NewYork-Presbyterian Morgan Stanley Children's Hospital in New York City. You should start with a level 0-1 nipple, which is typically designated for 0 to 3-month-olds. 

Each of the baby bottles on this list meets or exceeds these criteria. We also factored in feedback from three mothers on the What to Expect staff, as well as results from the 2022 What to Expect Feeding Awards, which polled more than 1,500 What to Expect community parents.

Why Trust Us?

What to Expect is the world’s most trusted pregnancy and parenting brand for a reason. Our product recommendations are based on expert parent insight, advice from medical professionals and feedback from the millions of parents and parents-to-be in our community. Our editors adhere to the highest research and reporting standards and our team of vetted OB/GYNs, pediatricians and other health professionals ensure our recommended products are safe and effective for you and your baby.

Best Overall Baby Bottle

Philips Avent Natural Glass Baby Bottle

best bottles philips avent glass
Buying Option
Pros
  • Thoughtful bottle design that’s highly durable
Cons
  • Because they’re glass
  • you do need to be a little more careful with them
Why We Love it
Community Reviews
Why We Love It

There are few boxes that the Philips Avent Natural Glass baby bottle doesn’t check, which is probably why it won the Best Glass Baby Bottle Brand in the What to Expect Feeding Awards. Parents in the What to Expect community love that it’s appropriate for breastfed or formula-fed babies, is designed to reduce gas and is highly durable. It’s also made of glass, which the AAP recommends as the best material for baby bottles.

I alternated between a few different bottles with my two children, but found myself reaching for Philips Avent bottles most often: In part because my sons took to them very well. Both of my breastfed sons had no issues transitioning back and forth between this bottle and the breast. The wide, flat nipple releases milk only when your baby actively sucks, mimicking the way he nurses. Philips Avent also offers more nipple flow rates than most other brands, which can give you more options to find the perfect fit for the stage your baby is currently at.

The design of this bottle also scores points for being well suited for babies with colic or gas. It’s gently curved, a feature Dr. Resnick recommends to reduce how much air baby swallows while drinking, but not dramatically so, which means the bottle isn’t overly bulky. When your baby is older, the shape allows for little hands to easily hold their own bottle.

Another reason Philips Avent became my go-to: they’re so much easier to clean and use than a lot of other brands. The glass is heat- and shock-resistant, so bottles can be safely warmed or sterilized in the microwave and put in the dishwasher. And while plastic bottles tend to get a little milky-looking after many months of use, parents say they’ve been able to use Philips Avent glass bottles for years with different babies by purchasing new nipples. So while they’re a little more expensive than their plastic counterparts, you might get long-term use out of them.

One final consideration with glass bottles is that some day care centers don’t allow them. So if your little one will be going to daycare at some stage, it may be worth having a few plastic bottles on hand (Philips Avent also has an excellent plastic version of the Natural bottle).

Material: Glass

Available bottle sizes: 4 oz. and 8 oz.

Available nipple sizes: 0 months, 0+ months, 1+ months, 3+ months, 6+months

Community Reviews
  • “I also liked the Philips Avent glass. Had a few falls indoors, none broke. I like that they don’t absorb a milky smell like plastic and are easy to clean, and will still be great for use with our next baby. I was breast- and bottle-feeding, and baby never had a problem using the Philips Avent Natural Flow nipple.”

  • “I like the Philips Avent glass bottles. I’ve had the same set since my first and I’m expecting my third now. They never break. They’ve been thrown 10 feet onto gravel, dropped on concrete, chucked out of cribs, etc… I don’t know what you’d have to do to break them but my set still looks great. I just buy new nipples for each kiddo!”

  • “Philips Avent Natural. Strong glass and easy to clean. I dropped a bottle twice last week and no cracks!”

Best Bottle for Breastfed Babies

Nuk Simply Natural Baby Bottles

best bottles nuk
Buying Option
Amazon
Amazon
$25 for 4
See Now Opens a new window Target
Target
$8 for 1
See Now Opens a new window Walmart
Walmart
$21 for 3
See Now Opens a new window Macy's
Macy's
$45 for 4, plus accessories
See Now Opens a new window
Pros
  • Nipple design is particularly breastfeeding-friendly
Cons
  • Some parents don’t like the packaging
Why We Love it
Community Reviews
Why We Love It

It’s common for breastfed babies to resist the bottle at first. And although every child is different and a lot comes down to preference, many parents in the What to Expect community say their breastfed babies do well with Nuk Simply Natural bottles, which are designed to make it easy for babies to switch back and forth between bottle-feeding and breastfeeding.

The nipple on this bottle in particular is designed with breastfed babies in mind. It has multiple holes to help the flow of milk feel more like nursing. (There are three, six or nine holes in the nipple depending on which size your baby is using.) It’s soft and flexible with a flat edge, a feature that’s meant to feel more like a mother’s nipple during breastfeeding.

“My daughter wasn’t too picky with bottles, but I found she transitioned from breast to bottle easiest with Nuk bottles,” says Leah Rocketto, What to Expect’s Associate Commerce Director. “With other bottles she took a minute or two to adjust, but with the Nuk she would start sucking instantly.”

Leah also loved that the Nuk bottles were wide for easier cleaning, but not so wide that they took up significant space in the cabinet. She does note, however, that you have to give your baby the bottle with the flat side of the nipple down, otherwise they’ll struggle. 

Nuk Simply Natural bottles also seem to be a good fit for little ones who have colic. They include an anti-colic air vent that many reviewers call out as helpful for reducing colic symptoms. EThe SafeTemp indicator on these bottles, which changes color when milk is too hot, is a nice bonus. They are also a great fit for babies who are already comfortable with Nuk pacifiers.

Some parents do say this bottle doesn’t feel quite as high-end or well-made as some others. But at just over $6, this is also one of the most affordable bottles on our list.

Material: Plastic

Available bottle sizes: 5 oz. and 9 oz.

Available nipple sizes: Slow, Medium, Fast

Community Reviews
  • “I ended up finding the Nuk Natural (even though my son is almost 3 months old) and he LOVES this one! Pretty sure it was cheaper than the [others I tried] as well.

  • “Personally loved Nuk! All my girls did too and that’s what I am going to use for my son this tim,e too. They also have these newer Nuk bottles called Simply Natural. My youngest absolutely loved these because it was exactly like breastfeeding so you could do either.”

  • “We’ve used Nuk Simply Natural … I used these with breast milk when I was pumping and still trying to get him to nurse so he wouldn't get even more frustrated at the breast than he already was.”

Best Baby Bottle for Pumping

Kiinde System

best bottles kiinde system
Buying Option
Amazon
Amazon
$42 for starter kit
See Now Opens a new window Walmart
Walmart
$100 for starter kit with bottle warmer
See Now Opens a new window Target
Target
$106 for starter kit with bottle warmer
See Now Opens a new window
Pros
  • Streamlines the process bottle-feeding pumped milk
Cons
  • Expensive and less environmentally-friendly
Why We Love it
Community Reviews
Why We Love It

Moms who exclusively pump have an epic number of breast pump and bottle parts to transfer milk between and clean.The Kiinde System helps streamline this process by letting you pump directly into storage bags that then attach to bottle frames that your baby can drink from.This starter pack includes everything you need to collect pumped milk and feed it to your baby: It comes with 20 pouches, two bottle frames, a breast milk organizer, three different nipples with a storage case for each and two nipple brushes.

Parents in the What to Expect community rave about this system, saying it’s incredibly convenient and helps eliminate a step in the milk-pumping process, since you no longer have to transfer breast milk from whichever container you pumped into back to a bottle.

But in addition to being an innovative system, the Kiinde products themselves are great, parents say. The cleverly designed bottle frames, which hold bags of the pumped milk and can be purchased on their own, have ridges that make it easy for baby to hold. And if your little one doesn’t do well with the Kiinde nipple, you can purchase adaptors to use your preferred brand instead.

Kiinde’s storage bags are pre-sterilized, stand up straight (other breast milk storage bags typically do not, which can make storing and using them frustrating) and have sturdy twist-top caps. While bottles with disposable liners are less environmentally friendly than other options on the market, Kiinde bags are recyclable.

The biggest downside with this system is that you need to continuously purchase more bags for as long as your baby is bottle-fed, which can be expensive. Some parents say they make their supply of storage bags last longer by pumping directly into a plastic baby bottle occasionally, such as when they plan to feed the pumped milk to their baby immediately.

Material: Plastic

Available bottle sizes: 6 oz. and 8 oz. pouch

Available nipple sizes: Slow, Medium, Fast

Community Reviews
  • “I absolutely love it, and so does baby (the slow flow nipples are excellent). No complaints whatsoever.”

  • “I love Kiinde. It is super convenient and much simpler. Baby can hold the bottle very easily. Bags cost around $12 for 40. They are recyclable and there's no annoying and sometimes nerve-wracking milk transfering. The bag is the bottle. We haven't had any spills yet where baby yanks off the nipple. 5 stars.”

  • "I exclusively pump and use this system, it works amazing for us."

Best Baby Bottle for Colic and Gas

Tommee Tippee Advanced Anti-Colic Newborn Baby Bottle Feeding Gift Set

best bottles tommee tippee
Buying Option
Amazon
Amazon
$62 for 5, plus accessories
See Now Opens a new window Target
Target
$62 for 5, plus accessories
See Now Opens a new window Walmart
Walmart
$73 for 5, plus accessories, including bottle warmer
See Now Opens a new window
Pros
  • Special venting system
  • temperature monitor
Cons
  • Some parents experienced leaking issues
Why We Love It

If your little one seems to be suffering from gas or colic, Dr. Resinck says the shape of your bottles might be a contributing factor. “Curved bottles are designed to reduce the swallowing of air and to cut down on gas and fussiness,” he explains. 

Tommee Tippee Advanced Anti-Colic bottles are curved and have a special tube insert that drives air bubbles to the back of the bottle, further reducing gas. The wide-necked design also helps baby maintain a good latch during feedings. And if you're a nervous new parent, you'll also love that the anti-colic tube has a temperature check to let you know if your baby's bottle is too warm for comfort. (It turns pink if things are too hot, a signal you’ll notice no matter how sleep-deprived you are.)

The texture and shape of the nipples are similar to a real nipple, so it's easy to switch from bottle to breast. The brand also has two newborn nipple options — a slow flow and extra slow flow — which makes it easier to find the right one to suit your little one.

The bottle shape is narrower at the bottom and wider at the top for easy handling, allowing the bigger bottles to be shorter (and easier to drink from) compared to comparably sized bottles. The 5- and 9-ounce sizes are great for preparing 4 or 8 ounces of formula, as they give you room to shake up the formula.

This five-bottle set includes three in the 9-ounce size and two that hold 5 ounces, as well as one bottle brush, two nipples, two formula dispensers, a set of removable handles, two pacifiers and a travel bottle warmer.

It’s worth noting that some reviewers say they’ve had leaking issues with these bottles. Other parents say making sure the vent is positioned correctly seems to prevent leaking. 

Material: Plastic

Available bottle sizes: 5 oz. and 9 oz.

Available nipple sizes: 0+ Months Extra Slow Flow, 0+ Months Slow Flow, 3+ Months Medium Flow, 6+ Months Fast Flow

Easiest to Clean Baby Bottle

Comotomo Baby Bottles

best bottles comotomo
Buying Option
Pros
  • Soft
  • squishy material babies love to touch
Cons
  • Not as easy to store as some bottles on this list
Why We Love it
Community Reviews
Why We Love It

Comotomo's unique bottle design is easy for baby to adjust to and What to Expect parents love how easy these are to clean. The wide mouth and collapsible sides mean you don't need a special brush to de-gunk these bottles by hand, and all parts are microwave-, dishwasher- and sterilizer-safe, too.

Alexandra Bisonó, Senior Art Director at What to Expect, tried several bottles with her daughter, who would spit up at every feeding. Eventually, they tried Comotomo which limited spit up and came with a few other features Alezandra loved. 

“We liked that Comotomo’s nipple shape is most similar to the breast and the fact that they’re all silicone,” Alexandra says. 

Since the silicone is squishy and soft, older babies like holding and squeezing these bottles during feedings, which can keep them engaged in the matter at hand. Alexandra says her daughter “loved holding that bottle and it seemed easy because of the texture since they were soft and easy to squeeze.” You’ll also appreciate the vents at the top of the nipples to release air outside instead of going into baby’s belly. The bottles themselves are also easy to put together and take apart, so you're spending less time making baby's bottle.

I didn’t discover Comotomo bottles until I had my second baby, and he used them often and loved touching the bottle base — the soft texture actually seemed to calm him when he was fussy. And like many parents in our community, I appreciated that they have just three large parts and are extremely easy to clean. For this reason, we used Comotomo bottles more and more often as my son got older; since he was drinking less milk, I found it easier to just clean the same bottle by hand before each feeding rather than clean multiple bottles at the end of the day.

This set comes with two 5-ounce bottles. At $14 each, they are definitely on the pricier side for baby bottles. But many parents report that since they’re so easy to clean, you actually need fewer of them, especially as your baby gets older and drinks less milk throughout the day.

The one downside of Comotomo bottles, in my opinion, is that they aren’t the easiest baby bottles to store. The roly-poly design, while lovely to touch, takes up an annoying amount of space in kitchen cabinets. I found them particularly frustrating to travel with because they don’t stack well against each other in a bag. So while they’re an excellent daily baby bottle, they may not be the best choice if you have limited kitchen storage or need to travel with your baby often.

Material: 100 percent silicone

Available bottle sizes: 5 oz. and 8 oz.

Available nipple sizes: 0-3 months, 3-6 months, 6+ months

Community Reviews
  • “I used them and love how easy it is to clean. When I was breastfeeding my son he would only use that bottle if I had someone watching him while I had to go out. The other bottles I’ve tried he mostly refused to drink out of.”

  • “I thought they were wonderful. Easy for baby to hold and transition back and forth to breastfeeding. Also very easy to clean. No fussy clean-up like some bottles.”

  • “My son loved them and honestly he loves them so much it was actually hard to get him off it, I wish they made sippy cups too! As a parent I love them. They’re so easy to clean and they totally last a long time, worth the money.”

Easiest to Store Baby Bottle

Dr. Brown’s Options+ Baby Bottles

best bottles dr brown
Buying Option
Pros
  • They have a slim
  • narrow design and a special internal vent system
Cons
  • Not the easiest bottles to clean
Why We Love it
Community Reviews
Why We Love It

If storage is a priority, Dr. Brown’s Options+ baby bottles are far and away your best bet. Their tall, narrow shape is extremely streamlined, with no ridges, grooves or uneven edges. Unlike Comotomo bottles, for example, their design makes them incredibly easy to store: You can fit more of these bottles together on a shelf and they stack nicely in a bag or bin. 

“Dr. Brown’s bottles were our go-to when we’d leave the house,” says Leah, who notes how easily they fit into the side pockets of her diaper bags. “The multiple parts make them less than ideal for a daily use bottle, but they’re perfect for a day out or weekend away because of how easily they fit into a bag or suitcase without taking up too much real estate.”

The slim bottle shape is also very easy for babies to hold, too. We used these bottles with my older son, and he was able to self-feed with Dr. Brown’s bottles much earlier than he could with other brands.

But there are more reasons to love these bottles than just their sleek design. Dr. Brown's bottles have a special internal vent system that's designed to help reduce gas and colic. A tube forces air into the base of the bottle, which keeps it from being reingested by baby during feedings. The nipple design on Dr. Brown’s bottles also slows the flow of milk, which can help prevent spit-up, burps and gas. 

Dr. Brown’s is recommended by a variety of experts. “These are the bottles speech-language pathologists recommend,” says Dr. Resnick. In baby’s early months, the palate is continuing to shape and they’re working muscles that will eventually prepare them for solid food and language development. The right bottle supports that process.

And if your baby has reflux, the Dr. Brown’s bottle could be a good choice for ensuring she gets the nutrition she needs, says Dr. Resnick (but it’s a good idea to check with your pediatrician to confirm). Olivia DeLong, What to Expect’s Senior Editor, can attest to how well Dr. Brown’s bottles help with acid reflux, which her daughter dealt with as a baby. 

We tried every single type of bottle and kept coming back to Dr. Brown’s because she took to those the best,” Olivia says. “They seemed to be the ones that minimized her reflux the most and were easy to use.” Another thing Olivia likes about Dr. Brown’s bottles was how easy it was to up the nipple size, because the brand is available pretty much everywhere. 

The only complaint parents tend to have, which Leah mentioned, is how many parts there are to clean. While some bottles on this list have just three parts, Dr. Brown’s has five. All parts, however, are top-rack dishwasher and sterilizer safe to make for easier cleaning. And in my experience, the bottle works perfectly fine without the tubing system, so you don’t have to use it if you find it doesn’t make a difference for your baby or she outgrows the need for it.

Material: Silicone nipple and BPA-free plastic

Available bottle sizes: 4 oz. and 8 oz.

Available nipple sizes: 0+ months, 3+ months, 6+ months, 9+ months

Community Reviews
  • “Used narrow Dr. Brown’s [bottles] with all three kids without any issues with leaking. Started with Avent with my first but switched to Dr. Brown’s because they seemed to make her less gassy and uncomfortable.”

  • “One of my twins had reflux, the other didn’t. Both absolutely loved Dr. Brown’s and took to it well, so I exchanged all my other bottles from my baby shower to Dr. B’s.”

  • “I’ve used the Dr. Brown’s Options+ regular bottles since my son was born. They’ve never leaked for me. I had some wide neck ones too but the regular size is easier for me (and him) to hold.”

Best Glass Baby Bottle

Lifefactory Glass Baby Bottles

best bottles lifefactory
Buying Option
Pros
  • Durable and will last a long time
Cons
  • Some babies don't like the nipple
Why We Love it
Community Reviews
Why We Love It

Glass bottles are becoming increasingly common because they are easy to clean, last a long time and are environmentally friendly. In addition to the Philips Avent glass bottle, Lifefactory Glass Baby Bottles are another popular choice in the What to Expect community. With their distinctive silicone sleeve, many parents say that they were initially impressed by the look of Lifefactory bottles, but ended up loving them for their quality and functionality.

Although glass, parents say these bottles are surprisingly durable. The glass is thermal shock-resistant borosilicate and the non-slip silicone sleeve seems to protect the bottle very effectively. In fact, there are countless stories in the What to Expect community of Lifefactory bottles dropping but staying intact. The entire bottle, along with the sleeve, can be placed in the dishwasher. It can also be used to freeze liquids.

Some What to Expect parents say their babies didn’t respond well to the Lifefactory nipple, which anecdotally seems to have a faster flow than other brands. And Lifefactory bottles are more expensive than some others on this list. But many parents say the initial investment is worth it since they hold up so well over time and can grow with your baby. When your little one graduates from the bottle, the brand has compatible sippy cup and straw tops you can use instead.

Material: Glass

Available bottle sizes: 4 oz. and 9 oz.

Available nipple sizes: Stage 1, Stage 2, Stage 3

Community Reviews
  • “Lifefactory for glass bottles. They are also very durable. My toddler dropped his, and it fell one story down on pavement and didn't break.”

  • “We use Lifefactory glass bottles and love them! They have a silicone sleeve to protect them from breaking (I have dropped them on our tile floor several times with no issues). They aren't too heavy, and it's easy to see how much liquid is in them.”

  • “I’m expecting baby number three literally any day now and will be using Lifefactory glass bottles with silicone sleeves for the third time. With our last two, we have only broken one bottle when it was dropped down an entire flight of steps and bounced several times. My son used to have a habit of throwing bottles and they still didn’t break. I have been so happy with them! The one thing I did notice though is that the flow of the nipples is extremely fast. I swapped them out for Dr Brown’s nipples instead and that worked much better for my kiddos. These bottles are definitely an investment but they also have adapters to turn them into sippy cups as your little one gets older and for the amount of life we have gotten out of them I don’t mind the price at all.”

Best Stainless Steel Baby Bottle

Pura Kika

best bottles pura kika
Buying Option
Pros
  • Can last for years by turning into a sippy cup or water bottle
  • highly sustainable
Cons
  • Expensive
Why We Love it
Community Reviews
Why We Love It

You don’t see as many stainless steel baby bottles on the market as you do plastic or even glass, but they offer some undeniable benefits. Stainless steel is the most durable baby bottle material, and there are no concerns about chemicals that can be found in plastic.

A number of parents in the What to Expect community recommend Pura Kika’s stainless steel bottles, praising how durable, lightweight and sustainable they are. Although pricey (at $21 each, these are significantly more expensive than other bottles on this list), parents say the initial investment is well worth it because the bottles can last for years to come. Once your baby outgrows the bottle and is ready to transition to a sippy cup, you can save the stainless steel base and use a different top (the brand has sipper spouts, straws and sport tops that are compatible with the same stainless steel base).

In addition to price, there are a few downsides to consider with stainless steel bottles. Some parents say it can be trickier to read and measure the lines indicating volume of milk in this bottle, although others say you get the hang of it after some time. Not all babies are a fan of the brand’s nipple, which is a bit more basic, and it may not be as well suited for babies with gas or colic.

Material: Stainless steel

Available bottle sizes: 5 oz. and 9 oz.

Available nipple sizes: Slow, Medium Flow, Fast Flow, Youth Flow

Community Reviews
  • “I really love Pura Kiki stainless steel bottles. I like them since not all daycares allow glass bottles, they are lighter weight and they grow with your child, so they can use them basically forever by changing the top.”

  • “We got glass [bottles] only, and just got a couple stainless ones from Pura Kiki now with our second baby. I will say they are easier to wash!”

Our Experts

We consulted one certified lactation consultants and one board-certified pediatrician:

  • Suzanne Chan, D.N.P., a certified lactation consultant and board-certified pediatric nurse practitioner at NewYork-Presbyterian Morgan Stanley Children's Hospital in New York City
  • Micah Resnick, M.D., a board-certified pediatrician in Cincinnati, Ohio

We also utilized results from the What to Expect Feeding Awards, which polled more than 1,500 caregivers in the What to Expect community.

Additionally, we consulted several What to Expect staff members, including:

  • Leah Rocketto, Associate Commerce Director, mom of a 1-year-old
  • Alexandra Bisonó, Senior Art Director, mom of a 2-year-old
  • Olivia DeLong, Senior Editor, mom of a 3-year-old

Finally, we canvassed What to Expect’s community boards to learn which baby bottles parents liked best and what features they most appreciated. 

FAQs

This mostly comes down to personal preference and how often you want to clean your baby bottles, as well as whether or not you are exclusively bottle-feeding. In the beginning, most formula-fed babies will need to eat eight to six times a day. So having at least that many bottles in the house ensures you won’t have to constantly clean them.

Many baby bottles are available in sets of two to 12, which can be more cost effective. But you should keep in mind that some babies simply don’t like a certain bottle for one reason or another, and many parents end up having to test a few different brands before finding the right fit. Your best bet might be to purchase a couple different types before your little one is born, then stocking up once you know what she likes.

In the beginning, 4- or 5-ounce bottles are generally better. Most newborns will drink up to 4 ounces in a single feeding, so smaller bottles are a great fit. Start with a Stage 1 slow-flow nipple (meant for preemies and newborns) to control how fast milk is released. However, if you’d prefer to invest in fewer bottles, there’s also no reason why you can’t offer your baby a larger bottle that contains fewer ounces of milk.

As your little one grows, she’ll graduate to a faster-flow Stage 2 nipple, and 8-ounce or larger bottles, drinking more milk at less frequent feedings.

If you’re breastfeeding, most experts say that about three weeks is the sweet spot for introducing a bottle. This lets your milk supply get established and also gives your baby some time to get the hang of breastfeeding. But always check with your pediatrician to see what they recommend.

“The most common reason breastfed babies struggle with bottles is just late introduction,” says Dr. Resnick. “Babies are born with an automatic sucking reflex, but at 2 to 3 months old that reflex becomes voluntary.”

 

You can find baby bottles made from a variety of materials, each with its pros and cons. Some of the most common include:

  • Plastic: Most baby bottles are made of polypropylene plastic, as the FDA banned BPA from all baby bottles and sippy cups in 2012. The benefit of plastic bottles is that they’re lightweight, sturdy and affordable. They may, however, be more difficult to clean, as they shouldn't be placed in the dishwasher.
  • Glass: Some parents prefer bottles made from glass, which is a very safe material that can last a long time. Most glass baby bottles these days are made from highly durable tempered glass and can be put in the microwave or dishwasher safely. However, they can be very heavy, and it is possible for them to break (though you can purchase silicone sleeves to protect them).
  • Silicone: Baby bottles made of soft, flexible silicone have become more popular in recent years. 
  • Stainless steel: Bottles made from stainless steel are very sturdy and safe, but tend to be more expensive.
  • Disposable liners: These have a hard shell (usually plastic) that holds an individual pouch of milk. The bag collapses as baby drinks, which should reduce gassiness. Built for easy clean-up (because you use and toss each bag), these are a convenient option, but they’re not eco-friendly.

Baby bottles come in varying widths. Although bottle neck width mostly comes down to preference, different types offer pros and cons:

  • Standard bottles: These traditionally designed bottles work well for most babies.
  • Wide-neck bottles: Short and squat, these bottles have a wide opening up top — which means a wider nipple, too, echoing the breastfeeding experience. Ideal for babies who will be going from breast to bottle frequently, a wide neck also makes clean up easy.
  • Angle-neck bottles: These are bent at the neck to prevent air from filling the nipple, which may make for easier feedings and a less gassy baby. The angled shape can make them harder to clean, however.
  • Narrow bottles: Some options on this list are a little narrower than standard size. A narrow bottle neck tends to be easier to hold and store, but also might be harder to clean.

Baby bottles almost always include nipples, but nipples can also be purchased separately. Some different nipple types you might come across include:

  • Traditional nipples: These are the bell-shaped, usually latex nipples that come with most baby bottles.
  • Orthodontic nipples: Designed to protect baby’s palate, these nipples have a bulbous top and flatter base.
  • Flat-topped nipples: Shaped more like the breast, these have a bigger base bulb and a flatter top.
  • Anti-vacuum nipples: Designed to prevent colic and gassiness by limiting the amount of air your baby takes in.
  • Multi-flow nipples: These are designed to be able to provide multiple stage flows (Stage 1 and 2, for example) in the same nipple. Adjust the positioning of the nipple to control the flow.
  • Disposable nipples: Sterile, individually wrapped nipples that come in handy for easy clean up, but must be tossed after a single use.

In addition to nipple type, you’ll also want to keep size in mind, as that impacts the milk flow. The nipple size is usually dertermined by age, with Level 1 nipples being best for 0 to 3-month-olds. Age, however, is not always the best determinant of nipple size. Dr. Resnick ecommends looking for other signs that your baby is ready for the next stage, such as sucking hard, flattening the nipple and getting agitated.

 

You should clean your baby bottles and nipples thoroughly after every feeding. The CDC recommends the following when cleaning and sanitizing baby bottles:

To clean baby bottles

  • Wash your hands well with soap and water for at least 20 seconds.
  • Take the bottle apart fully and rinse all parts under running water. 
  • Scrub all parts in hot, soapy water with a clean bottle brush in a basin, then rinse all items thoroughly.
  • To prevent the spread of germs, let bottle parts air-dry on a clean, dry paper towel or dish towel.
  • When you’re done, clean the bottle brush and basin, then let them air-dry fully.

To sanitize baby bottles

You can sanitize baby bottles and parts for extra germ removal, but the CDC says this step is most important if your baby is under 2 months old or has a weakened immune system.

You can sanitize in one of the following ways:

  • By boiling them: Put all bottle parts in a pot of water, bring it to boil and let it boil for five minutes. 
  • By steaming them: Place all bottle parts in a microwave steam system and follow manufacturer instructions.
  • With bleach: If you can’t boil or steam your bottle parts, bleach is another option, though it’s messier and more involved. Make a solution with 2 teaspoons unscented bleach per 16 cups of water in a clean basin, and submerge all bottle parts fully. Let soak for at least two minutes before removing. (You don’t need to rinse bleach off, since doing so could actually cause germs to return to the sanitized items.)

Whichever method you use, use clean tongs to remove bottle parts and let them air-dry on a clean, dry towel.

Note that if you have dishwasher-safe bottles and use a dishwasher that has hot water and a sanitizing setting, you don’t need to sanitize bottle parts separately.

WhatToExpect.com, How Much Should My Baby Eat?, January 2023.

WhatToExpect.com, When and How Should I Sterilize Baby Bottles?, January 2022.

American Academy of Pediatrics (AAP), Bottle Feeding Basics, May 2012.

American Academy of Pediatrics (AAP), Baby Bottles and Bisphenol A (BPA), February 2012.

Centers for Disease Control and Prevention (CDC), How to Clean, Sanitize, and Store Infant Feeding Items, February 2023.

U.S. Food & Drug Administration (FDA), Bisphenol A (BPA): Use in Food Contact Application, November 2014.