[Product Information] - The water bottle is available in 4 different sizes. The largest is 1.5 liters. The capacity is sufficient for both children and adults. Enough to keep you healthy and hydrated to support your outings and travels. Environmental Protection and Safety - Double-walled vacuum insulation. With a stainless steel shell and a robust inner container. Made of high-quality 304 stainless steel without BPA, phthalates, and toxins. Maximizes the temperature of drinks and soups at a suitable temperature. Keeps hot for 12 hours and cold for 24 hours. 100% Leak-Proof - The thermos bottle has an airtight seal and is covered with a food-grade silicone sealing ring to prevent overflow. The two-layer structure will not condense and collect water. There will be no sweat or frost on the outside. You can put the water bottle in your gym bag or backpack without worrying about leakage. Wide Range of Uses - This stainless steel bottle can be used at home, at work, at the gym, during sports, in the car, at the beach, or even when camping or hiking. Typical uses include water, tea, coffee, carbonated drinks, wine, and beer. Buy with Confidence - We are confident that our brand quality determines the market. If you have any problems, please do not hesitate to contact us. We will do our best to help you solve the problem.