Socksmith Womens Math Cotton^Lycra^Nylon Made in USA or Imported There's no equation needed to figure out the degrees of cool compliments you'll receive in these Socksmith&reg; Math socks! School them in comfort today! Sold as a one-pair pack. Crew-cut style sits at the calf. Self-adjusting welt cuff. Deep heel pocket. Y-stitch heel. 63% cotton, 34% nylon, 3% lycra&reg; spandex. Machine wash cold, tumble dry low. Imported.