Learning to drink from a straw is an important developmental milestone that develops lip rounding and promotes speech development. The ezpz Mini Cup + Straw Training System teaches toddlers to drink from an open cup and safely learn to use a straw. 9 months+ - Portion Size: 4oz - Helps toddlers succeed with the 3-Phase Developmental Drinking Method - Straw serves as both a Beginner Training Straw + an Advanced Training Straw - Soft silicone protects baby / toddlers developing gums + teeth - Reduces spillage - Weighted base and tactile bumps provide topple resistance - Made from high quality silicone that is BPA, BPS, PVC and phthalate free - Dishwasher and microwave safe