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 ...

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 ...

The answer to all our collective, rapidly cooling hot drink woes? A vacuum-insulated flask. Think of a vacuum flask as a cup ...

This is the product's overall performance score, based on key tests conducted by our industry experts in the CHOICE labs.

Learn more It's easy to think the products you see posted everywhere are overrated — but we're here to tell you Hydro Flask lives up to the hype. Vacuum-insulted, cold-retaining water bottles ...

Hydro Flask’s stainless steel water bottles are dependable, durable, and editor-trusted. Today, the brand introduced two ...

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 ...