EXCEL FR® Flame-resistant, 5.5 oz./yd², (185 m/g²) 90% Cotton / 10% Polyester with moisture management finish; 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; Home Wash; CAT 1 Arc Rating ATPV 6.4 calories/cm²