The Balder II case is a multi-activity case. The outer shell is made of polycarbonate, the inner one is made of polystyrene (EPS) for impact absorption. It weighs 260 grams, has 22 ventilation holes. The size regulation is done through the rear wheel 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 a certificate, CE EN 1078.Referencia: HB0006