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 8oz.Inside Layer: 88/12 Cotton/Nylon 6oz.Care: Industrial Wash.Meets NFPA 70E, ASTM F1506, OSHA 29 CFR 1910.269 Specs: 40 Cal/cm2 Ultra Lightweight Arc/Flame Resistant Pant-NFPA 70E ASTM F1506-Hybrid Fabric Technology 37% Lighter-Navy Applications: Electrical Contractors Utility Work Case Quantity: 8 Case Length: 18 Case Width: 14 Case Height: 12