A ski is narrow strip of wood, plastic, metal or combination thereof worn underfoot to glide over snow. Substantially longer than wide and characteristically employed in pairs, skis are attached to boots with bindings, either with a free, lockable, or permanently secured heel.

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

Skis are also fitted to vehicles dedidcated to traveling over snow such as snowmobiles and snowcats.

The Nordic ski technology was adapted during the early twentieth century to enable skiers to turn at higher speeds. New ski and binding designs, coupled with the introduction of ski lifts and snowcats to carry skiers up mountains, enabled the development of alpine skis. Meanwhile advances in technology in the Nordic camp allowed for the development of special skis for skating and ski jumping.

Ski nomenclature is relatively simple. Examining the ski from front to back along the direction of travel, the front of the ski (typically pointed or rounded) is the "tip", the middle is the "waist" and the rear (typically flat) is the "tail".

Sean Martin Pettit is a Canadian freeskier born in Ottawa, Ontario. Grew up in Chelsea, Quebec until age 7. He now resides in Pemberton, British Columbia.

Sean is a big mountain skier who has appeared in many popular ski movies. Sean is managed by Superheroes Management Sean was signed by Red Bull at the age of 13 becoming their youngest athlete ever. In 2008 Sean appeared on the Today Show along with the late Shane McConkey.

Sean has filmed prominent segments for ski movie pioneers Matchstick Productions.

Other film appearances