TRAVEL MUG: Made from durable stainless steel, this bottle prevents flavor transfer and keeps beverages hot or cold for hours. The eco-friendly thermos is easy to clean and dishwasher safe, perfect for on the go. IDEAL DRINKING TEMPERATURE: Our double-wall vacuum-insulated thermos keeps beverages cold for up to 24 hours and hot for up to 12 hours. The TempShield technology prevents condensation and heat transfer to the outside. LEAK-PROOF: with a leak-proof Flex Sip Lid for on-the-go convenience. Compatible with Hydro Flex Cap and Straw Lid. No more worries about spills while sipping coffee or tea. IDEAL FOR TRAVEL: This insulated flask fits in most backpacks and car drink holders, making it the perfect companion for your daily routine. The durable bottle is powder-coated, providing a non-slip, grippy surface SATISFACTION GUARANTEED: We offer a lif etime warranty against manufacturer defects. HYDRO FLASK stands behind our durable and robust materials and is committed to high standards.