6 oz./yd² (US) 10.1 oz./L yd (CA) 100% cotton, 18 singles Ash Grey: 99/1 cotton/polyester Dark Heather & Safety Colors: 50/50 cotton/polyester Sport Grey: 90/10 cotton/polyester Safety Green meets ANSI/ISEA 107 high-visibility standards Made with 100% U.S. cotton and advanced soft cotton technology for superior printability, quality, and comfort Classic fit Rib collar and cuffs Taped neck and shoulders for durability Tear-away label Member of the U.S. Cotton Trust Protocol Made with OEKO-TEX certified low-impact dyes Produced in WRAP-certified facilities with Fair Labor Association partnership