Designed to look, feel and perform most like a “grown up cup”, the Sassy 360˚ Spoutless Sippy promotes the most natural drinking position and does not interfere with the developing pallet of a young child. With a simple 2 part lid design the Sassy 360˚ Spoutless Sippy is easy to assemble, clean and store and best of all, baby sips naturally without spills! Easy, orthodontically correct, spill free and fashionably fun! Toddlers will transition with a little practice from bottle to cup. Pediatric Dentist recommended 360˚ Spoutless Sippy Cup design, sip anywhere around the rim Silicone valve automatically seals when child stops drinking to eliminate spills; spill-proof design Interchangeable lids fit all Sassy cups, and handles work with all non-insulated Sassy Sippy Cups Easy-to-clean, assemble and store BPA-free & Top-rack dishwasher safe