Liquid-cooled suit, c 1955.
© Science Museum / Science & Society Picture Library
Suit developed by researchers at the Royal Aircraft Establishment in Farnborough, Hampshire, for troops and pilots working in hot conditions. A pump, roughly the size of a two pence coin, circulates cold water round a network of knitted nylon, threaded through with 40 plastic pipes each as thick as a human artery. The suit is slim enough to wear under partial-presure suits and other protective clothing.