Product Description AERO PLUS is a lightweight, ventilated and compact helmet, ideal for use on all types of ground. Designed with a double shell and 12 vents, AERO PLUS guarantees excellent resistance and ventilation. Thanks to its strong structure, AERO PLUS is particularly suitable for the gravel world, to travel both dirt roads and regular roads. A perfect mix between running and adventure. 12 VENTILATION HOLES MOLDING TECHNOLOGY - TOP AND BACK / CROWN ROLL FIT WITH VERTICAL MICROMETRIC ADJUSTMENT REMOVABLE AND WASHABLE PADDING ANTI-INSECT NETTING INSIDE REAR REFLECTIVE DOUBLE SIDE SNAP CLIP BUCKLE FABRIC POUCH WITH LOGO INCLUDED SIZES: M (53-58 cm) - L (59-63 cm) WEIGHT: from 310 gr CERTIFICATIONS: CE EN 1078, CPSC Features Description: Helmets, Helmet Gender: Unisex Season: Spring, Summer, Fall, Winter Composition Entire: 7% Nylon, 5% Polyester, 5% Poliuretane, 33% Polycarbonate, 50% Polistirene Espanso