Utilizing Thermos vacuum insulation technology, this product ensures optimal temperature retention for both hot and cold beverages. It can keep your morning coffee or tea hot for up to 7 hours, while also maintaining iced drinks cold for up to 18 hours. The durable 18/8 Stainless Steel construction guarantees reliability year-round, making it suitable for long treks or road trips, whether venturing into the wilderness or simply traveling across town. The exterior remains cool to the touch when holding hot beverages and is sweat-proof with cold drinks. Thermos brand mugs and tumblers are dishwasher safe, with top rack placement recommended. The Drinklock sealing lid ensures a leak-proof seal when closed, providing peace of mind. It also includes a built-in tea hook for holding tea bags or most loose leaf infusers. The lid design is user-friendly, allowing for easy disassembly and cleaning. Thermos brand products consistently enhance everyday experiences. They excel in keeping hot beverages hot, cold drinks cold, and food fresh.