The best baby bottles

Comotomo baby bottles are made of 100% silicone, so they're a great option if you're looking for something other than plastic for your baby. The bottles are offered in both 5- and 8-ounce sizes and the shape is wider at the top than the bottom, with squeezable silicone to mimic the feel of a breast.

The Comotomo Natural Feel Baby Bottle is designed with a wide neck, which makes cleaning very easy. With some other types of bottles, it can be easy for debris from the dishwasher to get trapped in the crevices of bottle tops, but the Comotomo's wide mouth prevents that. The top of the bottle also has a really convenient "tab" that makes putting the bottle together or dissembling it for cleaning super easy.

The nipples have two anti-colic vents, and I did notice significantly less air being "gulped" by my baby when using this bottle. You can also change the nipple type and flow as your baby grows, from one hole for slow flow for newborns, up to variable flow for infants over 6 months old — all without buying a new bottle.

For a silicone bottle, these bottles are reasonably priced. They can withstand wear and tear and are incredibly durable, so you don't have to worry about them breaking. They don't crack, and you can toss them in the dishwasher or sterilizer without worry.

Lastly, while the shape is designed to be helpful for breastfed babies, this bottle worked well for my baby who has been bottle-fed from the start.

Pros: 100% silicone, easy to use and clean, various nipple flow options, affordable, warms quickly, natural feel for breastfed babies, dishwasher safe

Cons: May not fit easily in standard diaper bag bottle pouches

The PopYum 9-ounce Anti-Colic Formula Bottle is made of polypropylene while the nipple itself is composed of medical-grade silicone. It comes in 5- and 9-ounce sizes, but the for purpose of this review, I tested the larger bottle.

The bottle is designed so you can carry everything you need — both the water and the exact amount of formula — in just one bottle while on the go. You premeasure the formula in the top and fill the water in the bottom. A seal separates the two until you hit the button to allow the formula down into the water. It's not your standard bottle, however, and I admit that it took me several "trial runs" before I felt confident in setting up the bottle properly.

Made for on-the-go convenience, the bottle has thoughtful design elements, including a wider-neck mouth and a nipple shape that mimics the breast. The wide neck makes it easy to clean. This is especially important for a bottle that uses formula, which can clump and get stuck inside bottles.

PopYum offers three different nipple types: slow, medium, and fast flow. The Stage 1 bottle (5 ounces) comes with three slow flow nipples, and Stage 2 (9 ounces) comes with three medium flow nipples. You can also purchase a two-pack of the slow, medium, or fast flow nipples. Although every baby has different needs, mine was not ready for the medium flow nipple until she was over 6 months old.

The price of approximately $12 per bottle is very reasonable, but the main draw of this bottle is that it's convenient for use away from home. Because there are five components, it takes some time to clean. It also needs to be completely dry to avoid formula clumping, so it's not ideal for use as an everyday bottle.

Pros: High quality, affordable, fits in diaper bag bottle pouches, anti-colic, convenient for formula feeding, dishwasher safe

Cons: Many parts to clean, not user-friendly out of the box, all parts must be completely dry to use, slower to warm than standard plastic bottle

The Perry Mackin Natural Feel, Anti-Colic Silicone Baby Bottle is made of 100% food-grade silicone, has a wide-mouth design with a slimmer silhouette, and comes in both 6- and 9-ounce versions. It provides a realistic "latch" for breastfed babies and is soft for them to grab onto.

The bottle is easy to clean and you can sterilize it with a dishwasher, microwave, boiling water, or any baby bottle sterilizer. Both the mouth and the bottle itself are slimmer than the Comotomo silicone bottle, so it has a smaller profile.

I attribute Perry Mackin's wider top and longer nipple design to really mimicking what a breastfed experience is like for a baby. The nipple shape on this bottle is longer than some of the others I tested for breastfed babies. Because it mimics an actual nipple, I found that my bottle-fed baby had a harder time using it since she has never nursed at the breast.

Perry Mackin offers four different nipple steps, starting with a one-hole nipple for newborns that has a slower flow and going up to a full-flow nipple at around 9 months. All the nipples feature a one-way colic vent to reduce air bubbles and fight colic.

I like the design of this bottle, especially because it has a special joint-locking system that makes it easier to secure the top and prevent leaks. Plus, it has several add-ons, including straws and handles for older babies.

But it's also pricey, and for me, the biggest drawback was that my strictly bottle-fed baby had a hard time using it since it so closely mimics the breast. All things considered, it's good for breastfed babies and may be a consideration for those who are strictly bottle-fed.

Pros: 100% silicone, easy to use and clean, natural feel for breastfed babies, anti-colic, fits in most diaper bag bottle pouches, warms quickly, dishwasher safe

Cons: Pricey

Dr. Brown's Natural Flow Original Baby Bottle is made of BPA-free plastic and comes in 2-, 4-, and 8-ounce sizes. It is a traditional design with a narrow neck and slim profile.

Depending on which size bottle you purchase, the three-pack comes with one of its many nipple flow options, from the specially designed preemie nipple for the 2-ounce bottle to the standard slow flow for the 4-ounce bottle. But as with all Dr. Brown bottles, all the nipple tops are interchangeable, so it's easy to switch to the one your baby needs.

All of the bottles come with a removable anti-colic vent (the insert part).

You definitely can't beat the price of this bottle, and it is extremely durable, as well as dishwasher safe on the top rack. The only drawback I've found with these plastic bottles is if you wash them with them any tomato-based residue — such as pasta sauce — the bottles tend to take on an orangish hue that doesn't fade after subsequent washings.

I first used this bottle on the recommendation of the NICU when my daughter was born five weeks early for its preemie flow nipple. Now that my daughter is 8 months old, we are still using the bottle — it has stood the test of time and met all of our different bottle-feeding needs. Although I prefer the glass option for everyday use, I stick to the standard plastic Dr. Brown's Original Bottle for stashing in the diaper bag because of its slim profile.

Pros: Affordable, easy to use and assemble, dishwasher safe, removable vent system, three sizes, fits in diaper bag bottle pouch, warms quickly, interchangeable nipple flow sizes

Cons: Can discolor in dishwasher

In my testing, I also considered a few other options that didn't quite meet my standards for the best of the best.

• nanobebe ($10.99): This bottle designed to mimic the breast does have some admirable features like fast warming and breast pump adaptability, but I found it wasn't as practical as the other bottles I tested. It doesn't fit in diaper bag bottle pouches, transporting it in a cooler was cumbersome, and even holding it to feed my baby felt awkward.
• Evenflo Feeding Premium Proflo Venting Balance Plus Wide Neck Baby, Newborn and Infant Bottles, 6-pack ($22.99): I tested these as a budget option with a lot of the premium feature found in more expensive bottles, like venting technology and a wider latch. But I could not get over how cheap the plastic felt. It seemed like they could disintegrate in the dishwasher.
• Lifefactory 4-ounce BPA-Free Glass Baby Bottle With Protective Silicone Sleeve ($14.99): This bottle gets an honorable mention as a glass option, and I really liked the sleeve, which makes it easy to hold. It was sturdy to transport without the risk of it breaking. However, the nipple on this bottle was the deal-breaker for me — my daughter could not get the hang of it. It seemed to have a longer shape than she was used to in most other bottles, so it didn't work for us.

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