100432 - M FR Canvas Shirt Jac This easy-wearing, hard-working 8.5-ounce, FR canvas shirt jac features 88% cotton/12% high-tenacity nylon and a twill lining. You’ll find antique-finish brass snaps, two chest pockets with rivet reinforcements for durability, and adjustable two-snap cuffs with extended plackets. Carhartt FR label sewn on left pocket; NFPA 2112/CAT 3 label sewn on sleeve placket It meets the performance requirements of NFPA 70E and is UL® Classified to NFPA 2112.