Skiing is a sport using skis as an equipment, as the skis are attached to the boots. Hermione Granger was supposed to go skiing with her parents in 1995, but decided at the last minute to cancel and instead spend the Christmas holidays at 12 Grimmauld Place. Skiing is not known in the wizarding world, as Ron Weasley thought strapping thin strips of wood to ones feet and sliding down a hill was very funny.