Ski

A ski is a narrow strip of semi-rigid material worn underfoot to glide over snow. Substantially longer than wide and characteristically employed in pairs, skis are attached to ski boots with ski bindings, with either a free, lockable, or partially secured heel. For climbing slopes, ski skins (originally made of seal fur, but now made of synthetic materials) can be attached at the base of the ski.

A shaped alpine ski with relatively little sidecut and classic camber: the tip and tail touch the snow while the midsection is in the air.

Originally intended as an aid to travel over snow, they are now mainly used recreationally in the sport of skiing.