From no spill and leak proof cups to water bottles for every development stage of your growing child, Nûby™ offers a full assortment. Nûby's Thirsty Kids cups support drinking development from 12+ months all the way through early childhood. When weaning and transitioning from bottle to cup, you can count on Nûby's sippy cups to make it easier. Whether for your 3+ months, 6+ months, 9+ months baby, or your developing toddler, there is a right cup for every child.Perfect for thirsty kids on the go, the Nuby Thirsty Kids No-Spill Super Sipper Sip-it features a No-Spill top and a bite-resistant hard straw with a silicone valve to help protect against spills or leaks. The 360˚ Silicone valve vents air around the straw to allow for easy drinking. The cup is made from break-resistant plastic, which is BPA free. For convenient and easy cleaning the cup is top rack dishwasher safe.