HIGH QUALITY MATERIALS: Our insulated water bottles are made of rust resistant (18/8) food grade stainless steel, and durability is one of their biggest advantages, which is highly favored by customers. The powder coating treatment makes the thermos almost indestructible, easy to grip, and has a longer service life | EXCELLENT INSULATION: This insulated stainless steel water bottle structure is made of copper coating, and the four layer structure can effectively ensure the constant temperature of the liquid in the cup. It can store 12 hours of hot drinks and 24 hours of cold drinks, meeting the outdoor drinking water needs of the day. | BPA FREE: This insulated water bottle does not contain Bisphenol A and meets the requirements of the US Food and Drug Administration. Please feel free to bold use on a daily basis. This is not a disposable cup, it will be the perfect choice for your daily travel. | SILICONE NOZZLE: Compared to other ordinary plastic straws, we use environmentally friendly silicone material that can also be used by children, The suction becomes stronger and can absorbs more water. Make children fall in love with drinking water and turn it into a pleasure. | 100% PERFECT AFTER-SALES SERVICE: We are committed to presenting the best products to our customers. If you have any dissatisfaction with the received product, please contact us as soon as possible. We will provide the highest quality service to solve all your problems