The answer to all our collective, rapidly cooling hot drink woes? A vacuum-insulated flask. Think of a vacuum flask as a cup within a cup. The space between the two vessels is evacuated of any air, ...

The thermos uses stainless steel vacuum-insulated technology to keep foods ... and bright hues. The Hydro Flask Lightweight Mouth Trail Series is a top choice for those who are on the go and ...

It features the same TempShield double-wall vacuum insulation design as Hydro Flask’s insulated mugs and bottles, which means hot liquids should stay hot for an extended period. The same is true ...

Fitted with vacuum insulation technology to maximise ... or you're trying to avoid buying convenience food for lunch, this insulated food flask from Frank Green is an excellent purchase.