The Asobu "Liberty Canteen" is a double-walled thermo cup that\'s elegant, sleek, matte, and made of stainless steel. It keeps your coffee hot for up to 8 hours or water nice and cold all day. Take it to school, college, work, on a hike or anywhere outdoors - insulated technology will keep the temperature of your coffee, tea, or water just right. The flip top lid makes it easy to use and prevents spillage. Product features: - Material: stainless steel- 100% BPA free materials- Hand wash only- Spill-proof- Keeps beverage hot for 12 hours- Keeps beverage cold for 24 hours