The Stainless Steel Insulated Water Bottle is made from premium food-grade 304 stainless steel, durable and rust-resistant. With double-wall insulation, drink will be kept warm for 6 hours, and kept cold for 24 hours. This 12oz / 16oz / 40oz vacuum insulated stainless steel metal thermos is 100% BPA-free, non-toxic, non-lead, and not retain odors! Leakproof flex straw lid features a secure and tight seal to prevent spills and leaks. Dishwasher safe, wide-mouth design makes filling and cleaning a breeze. Ideal for outdoor activities, promotional events, or corporate gifts, this durable and lightweight bottle is designed to meet the needs of the U.S. promotional gift industry. A stylish and practical accessory for everyday use.