IDEAL DRINKING TEMPERATURE: Our double-wall vacuum-insulated tumbler keeps beverages cold for up to 24 hours and hot for up to 12 hours. The TempShield technology prevents condensation and heat transfer to the outside. SPLASH PROTECTION: Practical design with splash protection and sustainable construction: the durable build made from high-quality 18/8 stainless steel, the lockable Press-In Straw Lid, and the slim design make this tumbler your daily go-to. FLEXIBLE STRAW: Allows for easy drinking from any angle, enhancing your hydration experience. ERGONOMIC HANDLE: Offers a comfortable, durable grip for daily use, making hydration effortless. SATISFACTION GUARANTEED: We offer a lif etime warranty against manufacturer defects. HYDRO FLASK stands behind our durable and robust materials and is committed to high standards.