Sockwell Women's Serape Knee-Hi Socks 35% Stretch Nylon, 30% Merino Wool, 30% Bamboo Rayon, 5% Spandex Made in the USA and Imported Flat Toe Seam Arch Support offers a Comfort Fit and Helps Keep the Sock In Place Spandex Throughout prevents slippage and ensures a snappy fit throughout the day Turn Welt Top Helps Keeps the Sock in Place Y Heel Shape for Better Fit