I be have a hard time with bottle for my daughter - she stop use they when I be home for summer vacation as I nurse . I find one think Baby sippy cup but it be tall - she like the spout - I buy this kit because they have different size of bottle - I also buy the sippy attachment kit - the normal nipple leak - however when I use the sippy nipple I have no problem - I like that I can just change nipple and add handle .