Vacuum-insulted, cold-retaining water bottles are a dime a dozen but Hydro Flask was one of the first ... and it rocks small features like stretchy-yet-secure side pockets and front daisy chains ...

This clip shows how a vacuum flask prevents heat loss. Detail of the design of the flask to prevent conduction, convection, radiation and evaporation is given. This includes the vacuum ...

It has a double wall copper coating inside for maximum temperature retention.Available in three sizes, the flask is ideal for office and home use. Carry your favourite beverages in this vacuum ...