Sockwell Women's Posey Pop Socks 35% Stretch Nylon/30% Merino Wool/30% Bamboo Rayon/5% Spandex Made in the USA and Imported Spandex Throughout prevents slippage and ensures a snappy fit throughout the day Arch Support offers a Comfort Fit and Helps Keep the Sock In Place Turn Welt Top Helps Keeps the Sock in Place Flat Toe Seam