4.5 oz./yd, 100% combed ringspun cotton. Heather is 90/10 combed ringspun cotton/polyester. Granite Heather, Storm Camo & Vintage colors are 60/40 combed ringspun cotton/polyester. Contrast, self-fabric back neck tape. Side seams. Double-needle sleeves and bottom hem. Droptail with side vent construction. EasyTear label.