This Hydro Flask travel mug is made from durable stainless steel, preventing flavor transfer and keeping beverages hot or cold for hours. The eco-friendly thermos is easy to clean and dishwasher safe, perfect for on-the-go. Its double-wall vacuum-insulation keeps beverages cold for up to 24 hours and hot for up to 12 hours, with TempShield technology preventing condensation and heat transfer. The leak-proof Flex Sip Lid ensures on-the-go convenience and is compatible with Hydro Flex Cap and Straw Lid. Fits in most backpacks and car drink holders, making it ideal for travel. The durable bottle is powder-coated for a non-slip, grippy surface. Hydro Flask offers a lifetime warranty against manufacturer defects.