Product works once you figure out the vent hole situation. New parent and these are most of the bottles we received from a baby shower. Everyone has said that these bottles are great and the best bottle. I have found only frustration with these bottles. You have to put them together exactly right with the vent hole or it won't work. I'm giving this 2 stars because it's a bottle I have to think and pay attention to at three am when I'm trying to make a bottle. Not cool and not very thoughtfully designed in my opinion. Getting rid of all our bottles to switch to MAM brand as they are more friendly with just trying to make a bottle.

These bottles should be taken off the market and recalled!!! Tried the 4 oz bottles for my newborn and found that he worked so hard sucking and getting next to nothing to eat. He would take an hour to get 2oz down if he didn't fall asleep during the feed first. Fast forward to my child's 2 week appt…he not only lost his birth weight which is normal, but he dropped from 7.10 to 7.4 and hasnt gained anything back. We tried different formula, different nipple flows…nothing worked. We finally bought a different bottle type all together after these bottles essentially were starving my baby and he began to put on weight quickly. Don't buy these bottles, they should be recalled.

Bottle top does not lock on glass bottles and leaks. Baby has dropped milk on her clothes several times, very dissatisfied since day one of use and would not recommend. I've tried replacing the tops and it is the bottle itself. Waste of money.

The flow on these bottles are perfect for breast feeding babies. I've tried other brands such as medela and my baby chokes on the flow....but these bottle are perfect. No wasted breast milk is leaked from the sides of my babies mouth. I love these bottles. I just I bought more.

We have been trying to use these bottles for 2 weeks now, and it is more painful than changing diapers. Our baby will suck for 20 minutes and not a single drop comes out, even with the vents matching up. I wouldn't recommend these bottles to anyone and have officially thrown our entire sets of these bottles in the trash.

Love them only bottles I used that help with colics for my kids

We've tried several nipple sizes but our baby can't get any milk out of these bottles. We've made sure the notch on the nipple is lined up where it should be. I tried and could barely get any out!!

I do like the bottle. The level 1 nipple in Avent has a faster flow than other brands, but once my baby is old enough, say two-month-olds, he is able to use the Avent level 1 nipple. The bottle is very comfortable to hold. Despite the small size, it can hold a lot of milk, making nighttime feeding a dream, ONLY if I don't put the cap on. My Avent bottle came in a gift bag from Toysrus, so I'm not sure if the bottle is defective or if it is just a design flaw. The cap is unrealistically and ridiculously hard to get off. Sometimes it required two people to open it. It is such a pain to open the bottle if the cap is on. Most of the time, I just put the cap loosely on top to prevent dust without clicking it on. Please Please Please check the design of the cap. It is really so so hard to get off.

I was tentative about immediately using bottles on my third child, but with the craziness of having two other kids in school I had to. I've previously used Avent bottles with my other two and had great experiences, but with a 3 day old child it has been such an easy transition from breast to bottle and back. There is no nipple confusion and he immediately took to the nipple. There are no crazy parts to mess with like other brands, and they are simple and easy to use and clean. They also seem to reduce the amount of air my son intakes during feeds, so I'm not seeing any issues with gas or colic. I would definitely recommend this bottle and continue to purchase the larger ounce sizes for my child! I received the product through the Stellar Product Testing Panel.

As a first time mom trying to EBF I was struggling as my baby has a tongue & lip tie. He struggled to properly latch leaving us both frustrated and helpless. Finally I gave in and began introducing bottles. I found that many nipples were too quick for him or he disliked the shape. Thankfully I received a set of Avent bottlesas part of the Stellar Product Testing Panel. From the very first use my baby was in LOVE and I could finally breathe. This nipple was slow enough and mimicked my breast enough for him to comfortably eat. He was able to pause to swallow and breathe without the nipple leaking causing him to cough and me to stress. My newborn easily adjusted to the size 2 nipple at just two weeks old. I'm he flow was perfect for him! We began with size 1 but found that it was a tad too slow for him. I also loved the convenience of the wide shape in my hand during feedings. It feels very natural and comfortable. The bottle is also very easy to clean! Thankfully it has minimal parts making it quick and painless. I am so thankful for this bottle and nipple!