4.2 oz./yd, 100% airlume combed and ringspun cotton, 32 singles . Athletic Heather is 90/10 airlume combed and ringspun cotton/polyester. Deep Heather is 52/48 airlume combed and ringspun cotton/polyester. Semi-relaxed fit. 5/8" coverstitched neck and armholes. Side seams. Tear away label.