Tested both in the laboratory and by our recent expedition to Baffin Island these are highly efficient insulating vacuum flasks.

The Vacuum is created from a heating and cooling manufacturing process that is more reliable than many other flask designs.

Keep drinks hot for up to 8 hours or cool for 24 hours Thermally induced vacuum for optimum performance Stainless steel construction with copper coated inner wall Screw-in stoppers provided with each flask Sleek design with lid that can be used as a cup Conforms to British Standards for quality and safety Capacity: 0.7 Litres Dimensions: 75 x 75 x 285 mm Weight: 503g