Ultralight 40 Cal/cm2 clothing utilizes a Hybrid Fabric Technology to increase garment durability in the field while decreasing its weight by 37%. Our Ultralight garment uses a DuPont shell to provide its superior tensile strength, industrial wash resistance, and long-term durability.• 40 cal/cm2 Hybrid Fabric Technology• High tensile stength and greater tear resistance• 2x more breathable• 37% lighter than traditional HRC4 garments• Shell: DuPont® Protera® (Fiber Blend: 33% NOMEX and KEVLAR, 65% Modacrylic, 2% Antistatic)• Inside Layer: Westex® Ultrasoft® Interlock Knit (88% Cotton, 12% High Tenacity Nylon)• Ventilating unit and power pack are protected by a compact and durable ABS case covered by Ultralight fabric• Unit Weight: 1 lb (16 oz)• Battery Life: 6+ usable hours• Airflow: 35 cfm• Meets NFPA 70E, ASTM F1506, OSHA 29 CFR 1910.269, ASTM F2178-12