Canvas balaclava used on the 1933 Everest Expedition.

Canvas balaclava with a fake-fur edging with press studs for attaching to windproof jacket, made by Howard Flint Ltd., London, from equipment used on the 1933 Everest expedition by Sir Jack Longland

Mount Everest has some of the highest windspeeds in the world. The wind makes it feel particularly cold and when because it passes through unsuitable clothing. Windproof outerwear was a priority for the expedition. In his book, expedition leader Hugh Ruttledge said: “One has yet to find the man brave enough to appear publicly in England in this dress, but of its utilitarian value, indeed of its necessity, there can be no question”. This balaclava, made by Howard Flint, could be added to a matching jacket for extra protection. Climbers also wore matching trousers.