The Go Anywhere, Do Anything Sports Bottle: Designed to withstand the harshest environments and toughest adventures. Durable, Stylish, Reusable: 32oz for all-day hydration This Stylish sports bottle/thermos is engineered with 18/8 pro grade stainless steel, finished with a sweat-proof, powder-coated exterior that ensures greater durability. The Double Wall Vacuum Insulated construction keeps your beverage icy cold or piping hot from the first sip till the last. Drinks stay hot for up to 10 hours and cold for up to 20 hours. The Pro-grade stainless steel won't retain or transfer flavors. The removable lid makes it easy to clean, fill, serve and even share.