Thoughtfully Designed: The ezpz Mini Cup + Straw Training System teaches older babies + toddlers to drink from an open cup and safely learn to use a straw. The straw serves as a Beginner Training Straw + an Advanced Training Straw, and the straw length and diameter are designed for straw introduction. Sensory bumps keep the infant / toddler’s lips at the tip of the straw. Weighted base and tactile bumps provide topple resistance, making it an ideal weighted straw cup for toddlers.