Sockwell Women's Hot Springs Socks 50% Merino Wool, 30% Nylon, 17% Alpaca, 3% Spandex Made in US Medium cushioned sole added for comfort Spandex throughout the sock prevents slippage and ensures a snappy fit throughout the day Turn welt top helps keeps the sock in place Y heel shape design for better fit Socks will be shipped in either Goodhew of Sockwell packaging