Capacity 340ml. Spill-proof whether shaken, thrown in the air or left on it's side, and yet easy to drink from. Magic Valve controls flow to avoid spillage. Easy to clean. Snap-on lid to keep spout clean. Flip-top lid keeps spout clean when on the go. Sport spout and belt clip fit all Avent Magic cups and bottles. Side clip for attachment to a belt or stroller. Faster flow and larger capacity for active toddlers. Non-spill bite resistant spout.