The Allover Longhorn Ladies Anklet features sensura. Sensura provides abrasion resistance for continual durability wash after wash. Sensura contains a moisture managment system/channeling perspiration and moisture out of the sock where it can quickly evaporate ,helping keep your feet dry and healthy. (Made in the usa - Size: Women's Medium 6-11 - 75% sensura polyester 25% stretch polyester -machine wash)