Original sentence: The tracked model on the other hand is specifically designed to be used in grassy slopes.The wheeled model can be used in various terrains and for freestyle and off-piste action
Edited sentence: Grass skiing is an all-year round discipline which takes skiing to a new surface.The tracked model, on the other hand, has been specifically designed to be used in grassy slopes.The wheeled model which is ideal for novice skiers can be used in various terrains and for freestyle and off-piste action.This grass ski model is perfect for those who love to ski in a fast pace, but this doesn't mean that beginners would have a hard time using this.This just shows how versatile skiing is.Try this discipline and enjoy skiing even without snow