FoxRiver Women's Red Heel Monkey Friends Merino Wool Crew Socks 48% Nylon, 33% Merino Wool, 15% Acrylic, 2% Polyester, 2% Spandex Made in US Memory-knit construction keeps shape and fit Spandex compression holds sock in place Smooth, flat comfort toe seam Original Rockford Red Heel Socks Ultra-Lightweight Merino wool