Introducing AquaFlask, The new generation of Thermal flask to take from one adventure to the next! AquaFlask is engineered with double wall insulation with its ThermoGuard technology. It keeps iced beverage cold for up to 24 hours and Hot Beverage hot for up to 12 hours. AquaFlask is designed to be durable with its ergonomic design. What's more? everyone gets a limited 1-year warranty with every purchase of AquaFlask.