Wolverine Men's Flame Resistant Plaid Twill Shirt 90% Pima Cotton, 10% Nylon Imported Machine Wash This garment meets the requirements of NFPA2112-2012 standards on flame-resistant garments for protection of industrial personnel against flash fire For twill for aramid thread for plastic buttons Two chest pockets with flap and button through closure Button down collar FR twill 90 percent pima cotton/10 percent high tenacity