3-Stage Grow Nurser is made from BPA free durable, break-resistant plastic. Can be boiled; top rack dishwasher safe; microwave steam sterilizer safe. No-Spill spout included for easy transition from bottle to cup. Non-Drip nipple with soft flex-silicone. Easy Grip handles, for little hands when baby starts self-feeding. Your little one will find the transition from bottle to cup an easy one with the cup's soft silicone spout and the unique contour shape that easily fits their small hands.