BN: Arai MZ RC (Limited Edition, Made-to-Order) *Ready stock and not intending to sell below list price* Shell: RC Standard: Snell, JIS Size: L (59-60) THE ULTIMATE IN CARBON FIBER! The Arai MZ RC carbon fiber helmet is one of the most special helmets ever offered to the motorcycling community. Each outer shell consists of no less than eleven carefully applied carbon fiber layers. The shell is made of 11 layers of premium carbon fiber. It consists of an extremely stiff and light carbon fiber outer shell, reinforced with the “Peripherally Belted” construction.