I made the mistake of not giving my baby the bottle at an early stage. So, at around 5 months, I had trouble bottle feeding him. I've tried 3 bottles and 7 different nipples prior to using this bottle. My sister suggested this bottle as this is what she uses with her baby. It's a very cute bottle with a wide nipple and rubber body (does that make sense?). He didn't take it at first but since it has a rubber body, i was able to squeeze some in his mouth and made him realise it's the good stuff in there. I really like that it's so easy to clean, no need for any brushes. The only thing I don't like about it is when baby doesn't take a break from drinking, it concaves. Sometimes, when he stops to let air in the bottle, he won't go back to drinking anymore.