The Origin Olive Green Helmet is lightweight, its construction is done in the IN-MOLD method in polycarbonate. The inner part is made of polystyrene (EPS) for impact absorption. It weighs 330 grams, has 16 ventilation holes. The size regulation is done through the Boa Fit System which is a dial at the back of the helmet. The visor is adjustable. It has a quick-drying interior padding, is removable and washable. The retention system is adjustable, the closure is an adjustable buckle. It has three certificates, ASTM 1952, CPSC and CE EN 1078.Referencia: HB0202