Thorlos Unisex WGX Work Padded Crew Sock 84% THORLON acrylic, 13% stretch nylon, 3% elastic Imported No Closure closure Turn Inside Out-Machine Wash-Use Liquid Fabric Softner Fiber Contents: 84 percent exclusive THORLON acrylic , 13 percent stretch nylon , 3 percent spandex Impact Protection: Moderate padding in the ball and heel protects weight-bearing areas of the foot Performance Fabric: Constructed with THORLON fibers for superior softness, resilience, durability, and moisture-wicking for drier, better feeling feet Comfort and support: spandex top holds in place all day. Cushioned instep and arch for a better fit, more support and less pressure on the feet for more comfort Made in Statesville, North Carolina, USA