Westex Ultrasoft® Flame-resistant, 7 oz./yd², 88% Cotton/ 12% Nylon; Two-way concealed Nomex® taped brass break-away zipper, concealed snap at top of zipper and at neck; Mandarin style stand-up, two-way safety collar; Concealed snap closure on sleeve cuff; Elastic waist inserts; Two front swing pockets are topstitched and lined; Two patch chest pockets with flaps and concealed snap closure; Two patch hip pockets have single concealed snap closure; Left sleeve pocket; Deep-pleated action back; Side vent openings with snap closure; Rule pocket on right leg; Arc Rating ATPV 8.6 calories/cm; Regular sizes available in style CLB2;