Carhartt Men's FR Force Cotton Hybrid Shirt 4Xlarge Tall Sand Carhartt Force fights odors and its FastDry technology wicks away sweat for comfortSide seamed construction minimizes twisting Button down collar with button closureExtended sleeve plackets with two adjustable cuffs FR melamine buttons throughoutCarhartt FR and NFPA 2112/HRC 2 labels sewn on sleeve placket Two chest pockets with button closureMeets the performance requirements of NFPA 70E and is UL Classified to NFPA 2112 Triple needle stitched main seams