Description Lapco Fabric 12oz. 100% flame resistant FR cotton duck outer Shell 11oz. quilted lining-100% FR treated cotton and non-woven modacrylic batting. Elastic at back of waist. Two front pockets. Bi-swing back for ease of movement. Triple needle stitching on seams. Sewn with Nomextm) thread. Brass zippers with Nomextm) tape. Covered snaps for electric-arc protection. SAFETY ATPV 34 cal/cm(2)HRC 3 NFPA 70 E ASTM F1506 NFPA 2112 Certified