Luge

A luge /luːʒ/ is a small one- or two-person sled on which one sleds supine (face up) and feet-first. A luger steers by using their calf muscles to flex the sled's runners or by exerting opposite shoulder pressure to the seat. Racing sleds weigh 21–25 kg (46–55 lb) for singles and 25–30 kg (55–66 lb) for doubles. Luge is also the name of an Olympic sport. Source : https://en.wikipedia.org/wiki/Luge