Free of Bisphenol-A (BPA) phthalates nitrosamines lead PVC PET and biologically harmful chemicals. Quickly converts Thinkbaby bottles into Thinkbaby Sippy Cup. Designed to fit all Thinkbaby 5oz and 9oz bottles. No Spill spout!!! Features our cross cut design. Extra soft medical grade spout provides easier transition from baby bottle feeding to Sippy Cups. We have won multiple awards based on the ease of transition of our line. Perfect for 9 to 36 months Reduces environmental waste and pocketbook waste Dishwasher safe (Top rack recommended)