Wigwam Men's Merino Ridge Runner Pro Quarter Socks, Light Grey, Sock Size:10-13/Shoe Size: 6-12 44% Dri-Release/31% Nylon/24% Merino Wool/1% Spandex Made in US Machine Wash United States manufactured Ultimax pro series keeps feet moisture free for no blisters Seamless toe closure Merino wool blend for comfort and warmth Cushioned sole