High-quality stainless steel<br> The inner liner and outer shell are made of 304 or 316L food-grade stainless steel, which is corrosion-resistant, rust-resistant, ensures safe drinking water without odour, and is suitable for long-term use.<br> Functional features<br> Long-lasting heat preservation and cold preservation<br> Double-layer vacuum insulation technology, heat preservation up to 6-12 hours, cold preservation effect is also excellent, suitable for all seasons. Some styles support 24 hours long heat preservation.<br> Portable and practical design<br> Lightweight cup with non-slip handle or carrying strap (optional on some models), easy to hold in one hand or carry around.<br> The spout is designed to fit the lips for smooth drinking without spilling; some models come with a dual straw spout or straight spout.<br> Leak-proof seal<br> Silicone seal + leak-proof lock design, 360 shake does not leak, can be put into the backpack or car use.<br> Details and Craftsmanship<br> Safe Material<br> Lid, straw and other accessories are made of food-grade PP or silicone, BPA-free, healthy and environmentally friendly.The surface of the inner liner is smooth, easy to clean, and not easy to residual odour.<br> Application Scenario<br> Outdoor sports: hiking, mountaineering, cycling to replenish water.<br> Office study: alternative disposable water cups, environmental protection and health.<br> Travelling: drinking hot water or cold drinks on the plane or train at any time.<br> Parent-child use: children's models can choose a small capacity version, safe materials to make parents more assured.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin