For parents who are concerned about chemicals in what has become traditional baby products, this is a great non-bpa replacement for the plastic sippy cup. My daughter is particularly fussy about the recipient she's drinking out of and I was very surprised she accepted this in no time, as I involved her in opening up the Amazon box and be surprised by what she got.The only slightly negative thing about it is that it often takes several attempts before you can properly fix the spout in the lid hole. Once it's done it's totally leak proof.