6.75 oz, knit: FR jersey: 100% cotton. Slightly Fitted. Carhartt Force®: fights odors, FastDry® technology wicks away sweat for comfort. Mesh side panel extends to back yoke for added stretch. FR melamine buttons. Two chest pockets with button closure. Triple-stitched main seams. Side-seamed construction minimizes twisting. Two-button cuffs. Carhartt FR label sewn on left pocket; NFPA 2112/CAT 2 label sewn on sleeve placket. Meets performance requirements of NFPA 70E and is UL® Classified to NFPA 2112.