Nylon,Spandex Made in USA The Thorlos® Tennis Crew Thick Cushion 3-Pair Pack is designed for maximum shock absorption during court sports so your rally can keep on going! Sold as a three-pair pack. Crew length sock sits at calf. Constructed with THOR-LON® fibers for superior softness, resilience, durability, and moisture-wicking for drier, better feeling feet. Extended cushioning over toes for maximum protection during fast stops and starts. Flat knit at instep and cushioning in arch provide a better fit. Clinically-tested padding under the ball and heel provides maximum protection from friction, the primary cause of blisters, and impact protection where needed most. Low profile toe seam won’t rub or irritate your foot. 88% acrylic, 10% nylon, 2% spandex. Machine wash, tumble dry. Made in the U.S.A. Made in the USA.