Walls Men's Flame Resistant Insulated Coverall 88% Cotton, 12% Nylon Imported Machine Wash Arc rating, atpv-32cal/cm2, HR level 3 13 oz. For mod acrylic insulation quilted to for twill lining Snaps at leg hems for leg adjustment Ankle-to-knee leg zippers and front zipper, each with protective storm fly Garment and trims are NFPA 2112 up certified