Quickly converts a standard bottle into a sippy cup—While on-the-go, keep baby hydrated with our convenient and space-saving spout adapter for baby to use as a back-up sippy cup. Unique spout shape promotes healthy oral development—A cross between a sippy and straw shape to encourage independent drinking at 9 months and up. Silicone spout is soft on gums—Silicone sippy spout is soft on baby’s sensitive gums and made without PVC, and hormone-disrupting BPA, BPF, BPS, BADGE, BFDGE, and NOGE additives for baby’s health and safety. Collar fits two standard bottle sizes—Flip and pull the water bottle sippy top through either end of the cap for two collar sizes to fit standard water bottles. Travel cap keeps spout clean and helps prevent leaks—Travel cap snaps into place to keep our spout adapter for water bottles clean and prevent leaks. Easy clean—Easily clean in the dishwasher (top rack only) for convenience.