Review on Clear Tommee Tippee Anti-Colic Bottles, 5Oz, Pack Of 2 - Advanced Technology by Dawn Sherman

I got some of these from my baby shower and bought two more so we wouldn't have to wash bottles every few feedings. I love tommee tippee bottles, but the advanced anti-colic is just a wasteful gimmick.First of all, it's not new-dad-friendly. My husband had a hard time figuring it out.The white ring has to go on all the way or the bottle will leak.Also, you can't use the bottle without the inner stem or it will leak.Further, it doesn't pull air as advertised. If the air was flowing properly, my newborn wouldn't be sucking the nipple flat. And she still gets gassy and we have to give her mylicon and gentle formula because these bottles don't reduce gas symptoms.Now I have 5 anti colic bottles with extra parts to clean and sterilize that do not benefit my child. I'd rather be using the standard tommee tippee bottles.