4.5 oz./yd², pre-shrunk 100% ring-spun USA premium cotton, 30 singles. Heather Grey is 90/10 ring-spun cotton/polyester. Slim fit. Reactive-dyed for longer lasting color. Self-fabric collar. Taped neck. Side seams. Double-needle stitching on sleeves and bottom hem. Tear away label. USMCA certified. Includes screen print design.