This Wheelie Bike 2.0 Helmet, of skate type, its construction is made with the IN-MOLD mode. The inner part of the case is made of polystyrene for impact absorption. Its weight is 270 grams. It has 12 ventilation holes. The helmet regulation is done with a wheel located at the back of the helmet. It has a quick-drying interior padding, is removable and washable. The retention system is adjustable and the closure is an adjustable buckle. It has a certificate, CE EN 1078.Referencia: HB0102