6.5 oz./yd, 100% ringspun cotton. Athletic Heather is 90/10 cotton/polyester. Pre-shrunk piqu . Welt knit collar that resists curling. Side-seams. 1x1 ribbed sleeve bands. Three-button placket with bottom box-stitch reinforcement. Pearlized buttons with durable cross stitching. Double-needle hemmed bottom. Clean-finished side vents. Tear away label.