Thermos - Features:Thermos vacuum insulation technology for maximum temperature retention. Keep shot for up to 5 hours or cold for up to 14 hours - Durable stainless-steel interior and exterior - The exterior stays cool to the touch with hot beverages and sweat-proof with cold - Fits most vehicle cup holders - The slide lock lid is simple and easy to use slide to open and slide to close - Leak-resistant plunger lid system easily disassembles for thorough cleaning