Leakproof Lid Straw Tight sealing dome lid prevents spills, paired with a straw for mess none sipping of iced coffee, juices, and more Easy to Clean Smooth silicone surfaces is dishwasher safe and easy to rinse Foldable Portable Space saving foldable design fits in bags, car cup holders, and gym lockers Perfect for travel, picnics, workouts, and daily commutes 2 In 1 duals Function Design: switches seamlessly between ice making and drinking modes.Fold to make large ice spheres, pull open to use as a travel cup for all your favorite drinks Effortless Demolding with Food Grade Silicone, make from soft, silicone for easy, damage none ice removal Safe, full of durability, and for daily use