65 polyester 35 cotton poli ster algod n o baumwolle 5. 5-ounce inherent blend material and double needle reinforced with Nomex thread throughout the garment for durability Patented triple vent technology that protects the user on multiple levels NFPA 2112 UL Certified, NFPA 70E, ASTM 1930 Tested, Certified, ASTM F1506 Electric Arc Protection, ATPV 8. 9 cal/cm2, CAT2 Two chest pockets with flap and button closures, adjustable two button closure on each sleeve cuff and button-down collar Size xx-large measurement: Chest 52-54"