Helmet In Abs With High Resistance To Impacts And Scratches. Equipped With 20 Ventilation Holes For Perfect Breathability And A Removable And Washable Sweatband. Flip-up Visor In Stainless Steel Mesh. Ring Nut Adjustment System. Internal Straps Adjustable In 4 Positions. Height-adjustable Headphones. Noise Attenuation (snr): 27 Db. Removable Chin And Neck Protector Included. Possibility To Install The Rain Cover. Approved Uni En 397 / 352-3 / 1731