Self-fabric crew neck collar, Concealed chest pocket and pencil stall, Tagless, Raglan sleeves, Contrast mesh side seam gusset, Heat seal Bulwark® triangle centered at neck to show wearer has on FR undergarment. EXCEL FR® Flame-resistant, 5.5 oz. (185 m/g²) 90% Cotton / 10% Polyester with moisture management finish. Arc Rating ATPV 6.4 calories/cm².