Introducing the vibrant and dynamic Stanley Iceflow™ Flip Straw Tumbler 0.89L—a hydration essential that combines functionality with undeniable style. Featuring a built-in flip straw, refreshing sips are just a flip away. Simply snap it shut and let the double-wall vacuum insulation work its magic, keeping your drink leakproof and refreshingly cold for an impressive 12 hours or ice-cold for a staggering 48 hours. Plus, it fits into your car or bike cup holder. To top it off, the convenient folding handle allows for quick grab-and-go convenience, keeping you on the move.