Food-grade material: the inner tank is made of 10/18 food-grade stainless steel, the outer shell is made of 8/18 food-grade stainless steel, and the straw is made of food-grade high-quality silica gel, which can keep heat for up to 6 hours, with excellent heat preservation and easy flow characteristics. What you get: cute 550ml/18.5oz water bottle X 1 Leak-proof and overflow-proof design: This baby bottle is equipped with a silicone gasket, which can perfectly seal the thread of the straw, nozzle and cap to ensure that the baby bottle does not leak when carried, stored or used. It is suitable for daily use by boys and girls, schools, and outings. Use and maintenance: It is recommended that when drinking with a straw, the water temperature should not exceed 140 degrees Fahrenheit to prevent burns. It is recommended to wash by hand, not suitable for dishwashers. Hand wash details: please rinse with water after use. If there is dirt, use a cup brush and straw brush to clean it. Rinse vigorously under strong water flow. The perfect gift: It is a good choice to express your care for your children and family with exquisite and practical gifts. It is a perfect gift for birthdays, Christmas, anniversaries or other celebrations. color: blue