6 oz./yd (US) 10 oz./L yd (CA), 100% cotton,18 singles. Ash Grey - 99/1 cotton/polyester. Safety colors - 50/50 cotton/polyester. Sport Grey - 90/10 cotton/polyester. Safety Green - Compliant with ANSI / ISEA 107. Heavyweight fabric. Classic fit. Non-topstitched, classic width, rib collar. Double- needle sleeve and bottom hem. Taped neck and shoulders . CPSIA Tracking Label Compliant. Tear away label. PFD White - 100% cotton with cotton thread. No optical brighteners - allows for more consistent dye adherence. Increased body and sleeve lengths to accommodate shrinkage.