* 18m + * Stage 4 * It Rocks! * Movement Stimulates Development * Voted Product of The Year * Consumer Survey of Product Innovation 2012 * Innovative In & Out Lid Seals Straw to Prevent Leaks * BPA Free * Winner Toddler Mealtime Category. Survey of 50,180 People by TNS * Interchangeable System, Grows With Your Baby * Microwave and Dishwasher Safe Straw Cup Rocking movement engages baby making mealtime fun, while also stimulating development and growth! New spill-proof technology prevents leaks and ensures maximum hygiene when on the go with the In & Out Straw System that stores the straw within the lid. Round, ergonomic shape designed for baby"s hands to easily grasp. Safe and hygienic the enclosed lid design and rocking movement prevent the straw from coming into contact with surfaces. 100% silicone straw is gentle on developing teeth and gums to ease transition.