Cotton,Lycra Made in USA Over the calf sock that stay up all day without uncomfortable binding or squeezing. Designed to wear with all types of western and work boots. Low profile, no-rub toe seam protects against irritation. Supportive fit and provides less fatigue on the lower leg. Superior moisture management. Antimicrobial yarn permanently inhibits growth of odor-causing bacteria. Adapts to the season, so your feet stay cool in the summer and warm in the winter. Reinforced toe and heel. Added support at ankle. 80% r Please click here for Dan Post heel slip information. Please click here for Dan Post Soft Strike Comfort System information. The superb performance of the Cowboy Certified Over the Calf Socks by Dan Post® will keep you protected and comfortable all day long. The Cowboy & Cowgirl Certified Socks were designed and created by the owner of an Alabama sock mill in 2002. Cowboy/Cowgirl Certified Socks are designed for the western world for riding and roping but have become popular for multiple use activities.