NFPA® 2112. Arc Rating ATPV 45 cal/cm2. Fabric is flame-resistant, body: 7 oz 48% Modacrylic / 37% Lyocell / 15% Aramid, lining: 100% Cotton, insulation: 100% Modacrylic. Featuring durable Water-Repellent Finish, 2-inch silver reflective striping on back, shoulders chest.