5.5 oz./yd² (US) 9.1 oz./L yd (CA), 100% soft-spun cotton, 20 singles; Heather Grey is 90/10 cotton/polyester; All other heather colors are 50/50 cotton/polyester; Midweight soft-spun fabric; Relaxed fit; Non-topstitched, classic width, rib collar; Taped neck and shoulders; Double-needle sleeve and bottom hems; Tear away label;