Contigo AUTOCLOSE Shake & Go Double-Wall Tumbler, 20 oz, Lilac Shake It Up  Trap door under lid is designed for clean and easy shaking and mixing Seal It In  Leak-proof lid (when straw is removed) for on-the-go activities Dont Sweat It  Reduce slippery condensation with the double-wall, shatter-resistant plastic body Perfect Fit  Fits most car cup holders and under single serve brewers for coffee or tea Clean Up  Top rack dishwasher safe lid and body Lifetime Warranty