The Santeco Kotka is a double-wall vacuum-insulated flask for coffee, tea or cold drinks. Its body is food-grade 18/8 stainless steel with BPA-free parts, and the leak-resistant hinged lid has a hole for clipping on a carabiner. The wide mouth makes filling and cleaning easy, the outside stays cool to the touch with hot drinks, and it will not sweat with cold drinks. This is the 710 ml size in Midnight Blue, enough for several cups of coffee on a long drive or a cold drink through a hot day. Insulation keeps drinks hot for hours and cold for longer. Hand wash only; do not put it in the dishwasher, microwave or freezer.