The ezpz Tiny Cup helps baby transition from bottle to cup.Learning to drink out of an open cup is an important developmental milestone. The Tiny Cup is designed to help with that process. Designed for infants 4+ months. Product Details + Benefits: Designed to fit baby’s mouth and hands Soft silicone protects baby's developing teeth Open cup activates lip closure + tongue elevation Non-slip silicone grip makes movements to the mouth more successful Interior angle provides even flow for safe drinking Weighted base and tactile bumps provide stability and sensory awareness to decrease spills Safe to use with cold, warm and hot foods and liquids 100% food grade silicone is free of BPA, BPS, PV, phthalates, lead and latex Dishwasher safe Built to last (silicone is bendable and flexible and doesn't fade, corrode or deteriorate)