This rough and tumble stainless steel travel mug is great for long treks or long road trips—to the wilderness or across town. The Thermos Stainless King™ Travel Mug is an extremely durable vacuum insulated mug that holds both hot and cold beverages. It’s a dependable, always-at-the-ready product that can be used all year long, in any kind of condition. Your hot drink stays hot while the mug exterior stays cool. The sealing DrinkLock™ lid is leak-proof, but make sure you double check that it’s closed.