SUPER LIGHTWEIGHT HELMET SIGNED ACERBIS. The materials used in the construction of the outer shell ensure a weight ultra-light S / M 1100 gr., L / XL 1150 gr. as well as a perfect rigidity. The double ring closure is easy to use and remains always perfectly adjusted. Inner shell EPS foam lightweight and high impact absorption to pluridensità for a shock-absorbing levels area. Visor Adjustable Nose grille for ventilation, Front air intakes and rear extractors for the Venturi effect, Removable, washable and non-allergenic. Approved UN / ECE 2205.