Product Features- This straw cup is recommended by U.S. pediatric dentists- Allows for healthy oral development- 100% Leak-proof Money Back Guarantee- Mix and match Philips Avent bottle and cup parts. Compatible with all Philips Avent bottles !#!amp!*! sippy cups (excl. glass bottles !#!amp!*! My First Big Kid Cup).- BPA-Free and dishwasher safe***Remark***Full package comes as double pack. If you chose single cup, package will be cut half. If you mind about half packaging, please order 2 cups. Thanks