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. Features: 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 Specs: 40 Cal/cm2 Arc/FR Ultralight Ventilated Hood- NFPA 70E ASTM F1506- Hybrid Fabric Technology- Protected Ventilating Unit- Navy Applications: Electrical Contractors Utility Work Case Quantity: 5 Case Length: 24 Case Width: 24 Case Height: 12