This 20 oz double-wall, vacuum-insulated bottle is made from 18/8 stainless steel with a copper-lined interior to keep beverages hot or cold. It features a spill-proof bamboo twist-on lid with a leak-proof silicone gasket. BPA- and lead-free with a slim design that fits most cup holders, backpacks, and pouches. Top-rack dishwasher safe and packaged in a kraft gift box.