Warner Bros'sSippy cup is perfect for beginners. Your little one will find the transition from bottle to cup an easy one with the cup's rim that can besipped. You will be delighted with the transition thanks to the cup's leak-resistant design. The sippy cup top features air-tight closure that helps prevent drips and spills by regulating fluid intake as your little one sips from it. When the pressure created from drinking ceases, the siliconeriminsertseals, ensuring a leak-resistant cup. They are easy to hold on to and help your child guide the cup to their mouth and drink by themselves. Made of extra strong, lightweight and 100% premium material. The cup is suitable for the top rack of the dishwasher.