External shell: high resistance Poly-carbonate Fastening system: strap with a metallic buckle micrometric regulation for a quick release Internal shell: expanded Polystyrene with ventilated structure Internal wadding: very comfortable, high quality and Sanitized fabric the internal bottoms are realized with the Air plus fabric which brings the proper air ventilation avoiding any sweat problems and excessive heat sensation Ventilation system: front on/off air vents protected by a stainless steel net to avoid any outside intrusion (insects, powder) as per the CEN 1077 homologation
