Use the thermo flask to take cold water with you on the move. The double-walled sides with vacuum effect keep water cold for longer, the flask is easy to operate one-handed, and the practical click lid means you can drink from every angle. The flask is made from robust materials that tolerate frequent, daily use, and is fully leakproof, and easy to carry in a bag. Can also be used for hot drinks. Maintains the temperature of the contents: cold for 12 hours and hot for 6 hours 5-year warranty against manufacturing defects.