Title: Leaky.
Review: The price was great. However these are very bad for compatibility, and they are very leaky. Even on Evenflow bottles these leaked liked crazy. I ended up throwing these away after two weeks trying to find the right combo that didn't drench my kids neck. I tried evenflow, medela, gerber, and parents choice bottles. LEAKED In all of them. This is a great price for nipples, and you might think you should stockpile ( I did, I bought a dozen) but it's not worth it, you get what you pay for. My choice for standard nipples is Playtex ventaire nipples. Since we began using those nipples NO LEAKS. In fact, we noticed no gas too, we switched to using almost allPlaytex VentAire Advanced Standard Bottles 9-Ounce, 3 Pack (Colors Vary)as our main bottle. The nipple ring is tight and the nipple is stiff, the bottle design prevents nipple collapse and makes airflow work in the perfect combo so that he never got a gassy tummy again. Spend the money, buy the good stuff.
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