My daughter barely took a bottle when she was young because I was usually home to nurse her. When we did try to give her a bottle, she wouldn't take the ones my older son had used. She finally took the Comotomo bottles which are amazing, I have reviewed them separately, but let's just say 5 stars all around. Now that she is 1 year old and drinking whole milk, we needed a bottle again to feed her. She was being fussy with the baby nipples we had so I ordered these. They are the Y cut nipples and lets her drink a lot faster. She loves it and devours 6 ounces of milk first thing in the morning. Perfect for what we needed.