3.9 oz./yd2, 100% Airlume combed and ring-spun cotton jersey, 32 singles. Heather Colors - 52/48 Airlume combed and ringspun cotton/polyester. Athletic Heather - 90/10 Airlume combed and ringspun cotton/polyester. Envelope neck. Snap leg closure (specs are with binding). Side-seams. Tear away label.