In the 1930s, Louis Dufour, an engineer with a passion for sports, and especially for high mountain skiing, developed and marketed the Dufour-Gaillard rescue sled. Light and compact enough to carry in a backpack, this cloth sled allows an injured person to be taken to the nearest shelter thanks to its skis and poles. Eric Dufour, the son of Louis, developed the production of nonslip skins, and later adhesive skins, making use of his technical knowledge and his experience as a hiker.