Luge, for one, is a type of sledding sport that involves riding a small SLED down an icy track. It is a form of competitive sledding and is an Olympic sport. The SLED used in luge is called a luge and is designed to be ridden in a prone position. It is usually made of fiberglass or metal and has two runners on the bottom. The rider uses their body weight to steer the SLED and can reach speeds of up to 140 km/h. Luge is a popular winter sport and is enjoyed by people of all ages.