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There are 4 sizes of flask in the range from 0.3 Litre to 1 Litre and each one comes with two stoppers – a one touch stopper and a simple screw top stopper. 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.

Features

● 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
● One-touch and 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