Fine, pre-filter material inside the outer mesh provides protection from snow and water Tough outer mesh material that flows air even while holding up the toughest riders Release under-hood heat and pull in cold air to cool engine, clutches and belts Made in the U.S.A. with "2Cool AirVents" and their superior vent technology Frame construction is aluminum for durability and structural integrity Can reduce under-hood and clutch temperatures by more than 30? Available in black; mounting hardware included. AIR VENT S/D XP KNEE