4.5 oz./yd, 100% ringspun USA cotton, 30 singles. Heather Charcoal is 50/50 ringspun cotton/polyester. Reactive-dyed for longer lasting color. Pre-washed to minimize shrinkage. Ribbed collar. Taped neck and shoulders. Double needle stitching on sleeves and bottom hem. Overlock stitching on bottom hem. Contrast color three-quarter sleeves. Tear away label. USMCA certified.