Feature Vacuum Insulation,Dishwasher Safe,Leakproof,Spillproof Age Range (Description) Adult Hot & Cold Retention: Thermalock vacuum-insulation keeps beverages hot for up to 7 hours and cold up to 20 hours 100% Leak-Proof: Patented Autoseal technology seals the mug between sips to eliminate spills and leaks Easy to Clean: The lid opens completely for thorough cleaning, and is dishwasher-safe (top rack only) One-Handed Operation: Designed for convenience, fits in most car cup holders, allows for easy one-handed drinking Premium Quality: Made from high-grade 18/8 stainless steel and BPA-free materials Environmentally Friendly: Reusable design helps the environment and saves you money by reducing use of disposable cups Stylish & Durable: Sleek design and metallic finish combine for a modern, resilient travel mug. ⭐️Contigo ⭐️West Loop Stainless Steel Norwich Army ROTC Travel Mug with AUTOSEAL Lid, 24oz