I was given a pack of the 4oz bottles as a 'Welcome Baby' gift. They seemed like a good brand of bottles and ordered another set, and then another set in the 8 oz size. I took all the green 'no colic' inserts out though and put them in a cabinet because I was never able to get them inserted in such a manner that they did not leak. To prevent the bottles from leaking around the cap and nipple, I just never used the 'colic free' insert in the 4 months since my baby came home.

Absolutely TERRIBLE product. Did not function at all, our newborn was unable to get any formula out with either the size 1 or size 2 flow nipples. We used these nipples for our firstborn and they worked wonderful, they have redesigned them and now they are absolute garbage. It took over an hour just to get 1/2 an ounce out and these were the only way we had to feed our newborn once getting home from the hospital. None of the nipples from the package worked at all. Philips customer support was useless and offered no solution. Do yourself and your newborn a favor and buy a different brand. Steer clear of any Philips baby products. I would give this product negative 5 stars if I could.

My baby is a month old bottle fed and she likes the Philips Avent bottles, she uses the old Avent natural and for some reason these new nipples don't work for her, she sucks sucks and nothing comes out. We tried flow 2, 3 and 4. I'm done wasting my money on it!

I preferred the old version of the design. The new design I couldn't let a single drop out to test the temperature of the milk. I have been looking for the old version of the nipple everywhere but couldnt find it anymore.

I love the concept for this bottle especially when I tried to breast-feed and I dried up. My baby was super colicky and thought this was the perfect option. I have tried three different nipple sizes at this point and can't justify spending more money on some thing that she can't get a single drop out of. I have tried feeding her for almost 30 minutes on every single size nickel and she has yet to get a single drop out of any of the feedings in these bottles. My baby is one month old and we have tried both one, two and three with no luck. The size guide is not that helpful. I'm really disappointed in this product especially when the other Phillips avent works way better.

My 2 month old baby is just beginning to drink from a bottle so I was grateful to have received this nipple set from the Stellar Product Testing Panel. I liked that the nipple was wide and felt pretty natural. I have a fast flow when she's nursing, but she chokes frequently and while the flow of this Flow 4 nipple was to fast for her currently, it was great that this nipple has a no-drip tip so it doesn't drip or continue to flow into her mouth when she paused her sucking. I am excited to try this Flow 4 nipple again with her in the next few months!

Great nimble our son love the bottle and it looks very high quality. Reminds a Breast nipple so it's kinda nataural touch for our formula fed babies. Received product as a part of a stellar product testing panel.

The nipple set of flow 4 worked great for my almost 7 month old baby boy. He took right to them and will drink his entire bottle from them. The wider nipple is a nice change and I found easier to clean. I recieved this product from the Stellar Product Testing Panel and it was a great fit for us!

I was given this bottle nipple set to try as part of the Stellar Product Testing Panel. This nipple bottle set didn't work that well for us since our baby was used to a slower flow nipple. However if your baby is used to a faster flowing nipple then this set has a lot of good qualities. It's no drip top works really well and helps avoid milk loss and messes both during and before/after feedings. Another great feature is the way the nipple allows the baby to control the feeds, just like with breastfeeding which makes this a great bottle for those who plan to both nurse and bottle feed. All in all this is good bottle and nipple set and should work well if your baby is used to a faster flowing nipple.

These nipples were great! My daughter has progressively moved up from flow to flow. She is used to a really fast flow from breast feeding so she jumped to flow 4 at 3 months and now the 4 is too slow for her at 8 months and needs the 5 flow. It was easy for me to use this nipple and transfer between bottle and breast feeding. Thank you to the Stellar Product Testing Panel for the opportunity to review this item.