Thermos Stainless King 40-Ounce Beverage Bottle, Midnight Blue (Midnight Blue, 2) Made with Thermos patented vacuum insulation for maximum temperature retention, hot or cold Designed to keep liquids hot for 24 hours, and cold for 24 hours Durable stainless-steel interior and exterior keep bottle cool to touch with hot liquids and sweat proof with cold liquids Lid doubles as insulated serving cup; twist and pour function allows you to pour without moving the stopper With an ample 40-ounce capacity, the bottle offers plenty of sustenance on the go