Bite proof: The durable one-piece spout is gentle on little mouths but tough enough to withstand toddler teeth​ No spills: Two-piece valve is specially designed to stop leaks, and can be removed for free-flow drinking​ Leak-proof design: This toddler water bottle is leak, shake, and spill-proof for less mess and less stress (even when upside down or shaken)​ Easy to hold: Curved shape that’s specially designed for active toddlers to carry, so they can take their bottle on-the-go​ ​Baby-safe and easy to clean: All pieces are dishwasher and sterilizer safe and BPA free