I as a mother look for anything that makes my life easier. I found the NUBY baby bottles for about $1 per bottle. what a deal right? well on the package it says no leak! i thought to myself , yeah right they always say that and it never seems to really work.To my amazement i found out that they do not leak! How great is that they are cheap and really work! plus the way that the bottles are shaped are good for my little one, since he thinks he can do everything his self. moms you know that stage so works great since its spill proof! It has save everything from leaks on my couches and beds. also...