At under seven ounces, this men's FR shirt is light enough to keep you moving through warm weather. It's made of flame-resistant jersey that fights off sweat and odor. The rating labels are sewn right onto the chest pocket for convenience.6.75-ounce, 100% cotton FR jerseyMeets the performance requirements of NFPA 70EUL® classified to NFPA 2112Carhartt FR and NFPA 2112/CAT 2 labels sewn on pocketBuilt with Force technology to wick sweat and dry fastFastDry® technology wicks away sweat and fights odorsSide-seam construction minimizes twistingRib-knit crewneck holds its shapeLeft chest pocket