Voyager 12 oz Coffee Mug with Handle - Insulated Travel Mug for Hot & Cold Drinks - Perfect for Office, Commuting, and Outdoor Adventures

Durable: Made from top quality stainless steel and a copper-coated interior.
Double Wall Insulated: Keeps beverages hot for 4 hours, and cold for 16 hours.
Leakproof: Clear flip lid that twists-on for drinking hand preference.