Mesh,Polyester,Spandex Imported Take your socks up a notch with the Under Armour? UA Heatgear? Tech Crew 3-Pack! Sold as a three-pair pack. No-show style sits below the ankle. Self-adjusting welt cuff. Ribbed cuff. Elastic arch support. Deep heel pocket. Y-stitch heel. Heatgear? technology delivers a highly breathable construction that wicks sweat to the surface to keep you cooler, drier and lighter. Vent mesh panels allow for breathability into sock. 98% polyester, 2% spandex. Machine wash warm. Tumble dry low. Imported.