5.3 oz./yd² (US) 8.8 oz./L yd (CA), 100% cotton, 20 singles Ash Grey is 99/1 cotton/polyester Sport Grey: 90/10 cotton/polyester Graphite Heather, Safety Green & Safety Orange are 50/50 cotton/polyester Safety Green is compliant with ANSI / ISEA 107 high-visibility standards Classic fit Classic width, rib collar Taped neck and shoulders for comfort and durability Rib cuffs Tear away label