The Best Baby Bottle 2021

Best Baby Bottle 2021

Last Updated: Feb 11, 2021 @ 4:12 pmBest Baby Bottle 2021. After talking to lactation consultants, surveying thousands of Baby Bargains readers and researching dozens of bottles, our top choice for Best Baby Bottle 2021 is Avent.

Scroll down for our picks for Best Glass Bottle, Best Bottle Warmer, and Best Breast Milk Storage. New to bottle shopping? Read our 7 Things No One Tells You About Buying a Baby Bottle for advice and tips.

Avent gets the nod for its well-designed nipple, which is clinically proven to reduce colic (uncontrollable, extended crying that starts in some babies around one month of age). Avent bottles are perhaps the most popular baby bottles on the market today. Many parents swear by them for  being easy to clean (easier than the multi-piece Dr. Brown’s bottles). Feedback from readers is excellent.

(Scroll down for a detailed review of these bottles and the Avent brand)

The Best Baby Bottles

Avent Baby Bottles

Avent has a passionate following among parents who love their well-designed nipple plus their twin valve, anti-colic system. They make two types of bottles: the Anti-Colic with AirFree Vent and the Natural, shaped more like mother’s breast. Avent offers starter sets for both types.

Avent Baby Bottles: More details

Avent makes two types of baby bottles: Anti Colic with AirFree Vent and Natural. The big difference between the bottles is their nipples. The Natural is breast-shaped plus it has “Comfort Petals,” which are supposed to make the nipple softer and more flexible. The Anti Colic version has a one piece vent to keep air out. FYI: you can’t use the Natural nipples on the Anti Colic bottles or visa versa.

Lest you think the Natural bottles aren’t “anti colic,” never fear. The nipple itself has a twin valve, anti-colic system to keep baby from ingesting too much air. Regardless, both types are compatible with Avent’s breast pump, the Comfort Double. While the Anti Colic and the Natural are available in the BPA-free plastic, only the Natural comes in a glass version.

Prices vary depending on the number of bottles, size and type (but generally they are priced in the middle of the pack). If you find them pricey, there is some good news: they go on sale frequently.

You can get a starter set (put it on your registry), if you don’t know which sizes to buy. They even offer one starter set that includes a microwave sterilizer.

Avent bottles are perhaps the most popular baby bottles on the market today, along with Dr. Brown’s. Many parents swear by them for reducing colic and gas and being easy to clean (easier than the multi-piece Dr. Brown’s bottles). Feedback from readers is excellent.

The biggest complaint about Avent: the measurement markings on the side rub off after a few months of use. This understandably frustrates parents who’ve shelled out this much per bottle, only to discover it’s now hard to measure out formula and water.

Some readers report trouble with leaking, although this may be because some folks over-tighten the top. (Avent addresses this issue on their web site with graphics on how much to tighten). Leaks can also occur with the Anti Colic bottle if the gasket ring is incorrectly installed. Make sure the blue side is always facing down. And while there is no separate gasket for the Natural bottles, the nipple has to be set into the bottle correctly or it too can leak.

Overall, these complaints are minor compared to the effusive praise the bottles receive from readers. We highly recommend them.

Also Great

Dr. Brown’s Baby Bottles

With it’s two-piece vent system, Dr. Brown’s keeps the air out of milk or formula to avoid nipple collapse and excess air in baby’s tummy. 

Also Great: Dr. Brown’s

Dr. Brown’s baby bottles are neck and neck with Avent when it comes to popularity. Dr. Brown’s big selling point is its two-piece vent system which keeps air out of the milk or formula ensuring the nipple never collapses. They claim this type of venting (called “positive-pressure flow”) reduces colic, spit-up and gas.

Dr. Brown’s makes four types of bottles: the Original (the flagship), a wide-neck version, the Options polycarbonate bottles and Options glass bottles. Their newest bottle, Options is so named because the bottle gives parents the (wait for it) “option to use it with or without the internal vent.” Since colic starts around three weeks of age and ends around three months, we guess Dr. Brown’s wanted to give parents of older babies the option of using the bottle without the vent.

Overall feedback from parents is excellent and prices are similar to Avent and other quality bottles. They aren’t perfect though. The biggest complaint: cleaning all those parts. Of course, if it cures your baby’s colic, it’s worth it.

Best Glass Baby Bottle

Evenflo Glass Bottles

Evenflo’s glass bottles are very affordable, available in several sizes and quantities and the best choice for folks who don’t want plastic. Prices for the basic bottles are very affordable. The more expensive versions have elasticized plastic sleeve to help avoid breakage if dropped or you can purchase sleeves separately

Best Bottle Warmer

Avent Fast Bottle Warmer

Avent’s Fast Bottle Warmer, which warms a room temperature bottle in about four minutes, is our pick for the best bottle warmer. Parents like it overall, although a few complain it doesn’t heat a cold bottle as fast as Avent claims. Another bummer: it doesn’t have a timer or auto shut off. On the plus side, Avent’s Fast Bottle Warmer does fit baby food jars and all types of baby bottles (not just Avent).

Also Great

Kiinde Kozii Breast Milk & Bottle Warmer

The Kiinde warms your frozen or refrigerated milk or formula using a warm water circulating bath, so no boiling water or hot steam, plus no hot spots in the bag or bottle.

Also Great: Another good bet is the Kiinde Kozii Breast Milk & Bottle Warmer. This warmer accepts frozen breast milk storage bags, liner bottles, plastic bottles, glass bottles and even food containers—any type, any brand. Kiinde’s SAFEHeat technology consists of a “circulating bath of warm water” to heat a bottle.

Since the water is heated to only about room temperature (70°F), Kiinde claims to prevents hot spots and allays concerns that boiling water can cause chemicals like BPA to leach out of older bottles. A timer and automatic shutoff means it won’t overheat and the water reservoir does not require parents to add water each time it’s used.

Feedback on the Kiinde is positive. Most folks like the warmer, say readers—Kiinde’s features and quality make it worth the extra investment, in our opinion. A few dissenters note the Kiinde requires regular maintenance (you have to clean the water scale out periodically). And we heard one or two reports of the warmer breaking after just eight or ten weeks. We’d like to see the company step up its customer service on these issues—more than one parent who had a problem said the company wasn’t helpful in solving the issue.

Best Bottle Sterilizer

Avent Express II Microwave Steam Sterilizer

If Avent is your choice for bottles, we think the Avent Express II Microwave Steam Sterilizer is a best bet. It holds up to four Avent bottles and is very affordable.

Best Breast Milk Storage

Lansinoh Breastmilk Storage Bags

When polling experienced moms about freezer bag storage for breast milk, the winner hands down is Lansinoh. These bags allow you to pump directly and they work with Lansinoh, Medela, Ameda and Avent pumps. Lansinoh storage bags have a double zipper seal to prevent leaks. You can store them in the freezer stacked flat to save space as well.

Why Trust Us

We’ve been rating and reviewing baby bottles since 1994. In addition to hands on inspections of each bottle/nipple system, we have also consulted with lactation consultants and dentists as well as pediatricians. We also evaluate consumer reviews posted on sites like Amazon, as well as our own message boards. Here’s another key point: we don’t take money from the brands we review. No free samples, no sponsors, no “partnerships.” Baby Bargains is your independent and unbiased source for expert baby gear reviews. We’ve been writing and reviewing baby gear since 1994. Yes, that long!

How we picked a winner


We evaluate baby bottles and nipple carefully with the assistance of lactation consultants (who help determine which bottles are closest to breastfeeding); pediatricians and dentists. It’s important to us to recommend bottles that will not only supply your baby with good nutrition (whether you breast or formula feed), but also won’t cause issues with colic or, later in life, teeth. We also check bottles for overall quality, cleanability and ease of use—for example, do they have a venting system to avoid swallowing too much air?

We also gather significant reader feedback (our book, Baby Bargains has over 1 million copies in print), tracking cribs on quality and durability. Besides interviewing parents, we also regularly talk with retailers  to see which brands are most trustworthy and other key quality metrics. Since we’ve been doing this since 1994, we have developed detailed profiles of major bottle brands that help guide our recommendations. See below for links to bottle reviews.

7 Things No One Tells You About . . .

7 Things No One Tells You About Buying A Baby Bottle!

1. The nipple is really more important than the bottle.

There are three basic types of baby bottle nipples: orthodontic, flat-topped and bell-shaped. Which is best? All of them claim to be “closest to mom’s breast,” but here’s our advice. If you’re breastfeeding and only intend to give your baby an occasional bottle, these babies tend to do best with bell shaped nipples. With babies who are bottle fed from the get-go, any of the nipple shapes will likely work well.

best baby bottle

Orthodontic Nipple


best baby bottle

Flat Topped Nipple


best baby bottle

Bell Shaped Nipple

2. Nipples have different flow rates.

When you’re buying your first nipples/bottles, be sure you’re using newborn nipples. This means the hole in the nipple is small, allowing a slow flow. If you use a nipple for older babies, you’ll find your newborn gagging and sputtering. Some parents find their babies get used to the newborn nipple and never need to change to the nipples for older babies. And you’ll only need 2 oz. bottles if you’re feeding a newborn—that’s the right amount at first.

3. Baby bottles don’t need to be sterilized.

That’s right, you can just put baby bottles in the top rack of the dishwasher or wash them by hand in hot, soapy water. There is no proven benefit to sterilizing baby bottles every time they are used (but, yes, sterilize them when you first open the package). Hint: get a dishwasher basket to keep bottles and tops in place in your dishwasher.

A dishwasher basket for baby bottles is a good idea—all the small parts, like nipples, won’t get lost or melted.

A dishwasher basket like this one from OXO for baby bottles is a good idea—all the small parts, like nipples, won’t get lost or melted.

4. You’ll want to buy enough bottles to get through a couple days without washing.

Who wants to wash bottles the first day you get home from the hospital? If you’re formula feeding baby every two to four hours, that’s quite a few bottles—as many as 12 bottles per day! For parents who are breastfeeding, three to six bottles is the max you’ll need. Because you don’t want to start bottle feeding until breastfeeding is established (a few weeks, usually), get a couple 4 oz. and a 9 oz.

5. We recommend silicone nipples, not latex.

best baby bottle

NUK, the nipple and pacifier manufacturer, compares latex and silicone.

Nipples are made of either silicone or latex. Silicone nipples last longer, don’t have any flavor, are heat resistant and may resist bacteria better than latex, according to our research. FYI: Latex can be allergenic too.

6. The cause of leaky baby bottles may be . . . you!

Before you return that leaky baby bottle to the store, consider how you are tightening the bottle. We see lots of complaints from parents that a particular baby bottle leaks, but when we ask manufacturers about this problem, they point out that parents often over tighten the bottle, which (ironically) can cause leaking.

Some baby bottles also have vents to allow air to escape the bottle and keep baby from swallowing that air leading to colic and discomfort. While the venting is a great idea, it complicates how the bottle is put together, however. Consult the bottle’s instructions on assembly (and yes, there are even YouTube videos) especially if you are a first-timer!

7. Lots of little parts = cleaning frustrations.

Sometimes simpler is better. Baby bottles with lots of gaskets, vent tubes and more, mean you have to clean more small parts and my eventually lose some of those parts.

best baby bottle

Here’s an example of the different bottle parts you’l have to keep track of if you buy Como Tomo bottles, a rising star among baby bottle makers. Other bottles may also have additional vent parts that have to be cleaned and organized.

Reviews of over a dozen baby bottle brands

The Best Baby Bottles

Avent Baby Bottles

Avent has a passionate following among parents who love their well-designed nipple plus their twin valve, anti-colic system. They make two types of bottles: the Anti-Colic with AirFree Vent and the Natural, shaped more like mother’s breast. Avent offers starter sets for both types.

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