Contigo AUTOCLOSE Shake & Go Flex Tumbler, 24 oz, Monaco Switch It Up-Drink your favorite beverages with or without the straw 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 Don't 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