Fox River Women's Her Steel-Toe Lightweight Crew Socks 53% Polyester/45% Nylon/2% Spandex Made in US ULTRASPUN POLYESTER PERFECT FOR ANY DAY OF THE YEAR: Engineered for superior breathability and wicking ability, UltraSpun is designed to pill less and provide enhanced shape retention. It is also very durable providing superior wear over time and is 28 times more durable than ordinary cotton CUSTOM-FIT COMFORT: URfit System provides the ultimate personalized response fit combining memory knit compression, a contoured rib top and spandex compression zones STAY DRY ALL DAY LONG: Proudly made in the USA, our exclusive Wick Dry technology keeps feet dry and warm STAYS UP AND FEELS GREAT: Contoured rib top made from elastic and spandex helps hold the sock up and in place to eliminate slippage without pinching BACKED BY COMPANY STANDARDS OF EXCELLENCE: Fox River products are guaranteed against manufacturing defects for one year; products may be returned within one year with the dated receipt to the store where you purchased them or by following our FoxSox.com return process