Simian Insulated 40oz Water Bottle Flask for Hot or Cold Drinks Versatile water / coffee flask keeps your drink cold or hot and fresh! Bring it running, to the gym or yoga class, park or office - Kuuk makes it easy to keep your beverage cool all day long. Featuring double-wall vacuum insulation, this sports bottle keeps a pocket of air between your drink to ensure it stays at the desired temperature for long hours at a time. Made with high quality food-grade 18/8 stainless steel, this sports bottle is 100% food-safe and BPA-free. Sweat-free design features a matte finish to completely eliminate condensation and always keeps your desk, bag or hands dry. Choose from 3 colors - Your Kuuk wide-mouth flask comes in your choice of grey, blue or green, and also includes a convenient carabiner for carrying anywhere.