Sledding sledging (UK), sleding or tobogganing is a common activity in wintry areas, similar to sliding

Sliding

Sliding may refer to:*Sliding , also floating or gliding, a group of footwork-oriented dance techniques*Slide , an attempt by a baseball runner to avoid getting tagged out*Slide...

, but in a prone or seated position requiring a device or vehicle

Vehicle

A vehicle is a device that is designed or used to transport people or cargo. Most often vehicles are manufactured, such as bicycles, cars, motorcycles, trains, ships, boats, and aircraft....

 generically known in the US as a sled

Sled

A sled, sledge, or sleigh is a land vehicle with a smooth underside or possessing a separate body supported by two or more smooth, relatively narrow, longitudinal runners that travels by sliding across a surface. Most sleds are used on surfaces with low friction, such as snow or ice. In some cases,...

 or in other countries as a sledge or toboggan. More formally it is one of three olympic sports— the luge

Luge

A Luge is a small one- or two-person sled on which one sleds supine and feet-first. Steering is done by flexing the sled's runners with the calf of each leg or exerting opposite shoulder pressure to the seat. Racing sleds weigh 21-25 kilograms for singles and 25-30 kilograms for doubles. Luge...

, skeleton

Skeleton (sport)

Skeleton is a fast winter sliding sport in which an individual person rides a small sled down a frozen track while lying face down, during which athletes experience forces up to 5g. It originated in St. Moritz, Switzerland as a spin-off from the popular British sport of Cresta Sledding...

, or bobsledding, all of which are based on sled principles and developed in the same time and place (St. Moritz

St. Moritz

St. Moritz is a resort town in the Engadine valley in Switzerland. It is a municipality in the district of Maloja in the Swiss canton of Graubünden...

) by much the same circle of people, mainly English tourists with an interested assist from the worthy craftsmen of that Swiss village.
The generic US term sledding refers to traveling down a snowy hill using a sled such as a flexible flyer

Flexible flyer

A flexible flyer or steel runner sled is a steerable wooden sled with thin metal runners.- Usage and Design :Flexible fliers are flexible both in design and usage. The rider may sit upright on the sled or lie on their stomach, allowing the possibility to descend a snowy slope feet-first or...

 with wooden slats and metal runners.