From Tommee Tippee
Leakproof: Smart two-piece valve stops spills (but can be removed for free flow drinking)Bite-proof: One-piece spout is soft on tender gums (but durable enough to withstand tiny teeth) Wider spout: Mimics the shape of a cup to help support their transition towards drinking from an open, curved rim Removable cover: Handy lid helps to keep the spout clean between sips (and prevents messy spills on-the-go)Easy to clean: Steriliser and dishwasher safe | BPA free