Tal water bottles are manufactured of Stainless-Steel Food Grade 304, the same material used to make flatware, cutlery, and food/beverage processing and production equipment. Our goods are both FDA-approved and BPA-free. The Tal water bottle lid is made to be leak-proof. Tal water bottle 64 oz is made to keep its warmth for as long as possible. Keeps beverages hot or cold for a long time. Cleaning and adding ice are simple. Free of condensation and BPA. Eco-friendly.