Nylon,Spandex Made in USA THOR?LON? construction provides amazing resilience, durability and moisture wicking. Moderate cushioning in the ball and heel offer maximum shock, impact, shear and blister protection. Light cushioning in the arch offers a better fit and comfort. Extended heel pad for additional blister protection. Spandex collar helps hold them in place all day. Materials: 74% THOR?LON acrylic, 21% stretch nylon, 5% spandex. Machine wash warm and tumble dry medium. Made in the USA. Made in the U Stop reaching into your boots to adjust your socks with the comfortable Western Dress by Thorlos? Sold as a three-pair pack. Crew length sits at calf. Designed to be worn with Western boots.