The REV'IT! Offtrack Pants are the definition of function and versatility. An abrasion resistant outer shell uses zippered vents to control air flow. A detachable thermal liner and detachable waterproof liner keep you warm and dry during wet chilly rides. When the weather clears and the temperatures rise, simply remove the liners and still ride protected with a vented shell that has CE level 2 knee Armour and CE level 1 hip Armour. Superb protection against the elements let you keep exploring.