Sockwell Women's Merino Wool Value Crew Socks (2 Pack) 33% merino Wool/33% Bamboo Rayon/28% Nylon/6% Spandex Made in US Spandex throughout the sock prevents slippage and ensures a snappy fit throughout the day Ultra flat toe seam for superior in shoe comfort Non cushion sole Turn welt top helps keeps the sock in place Y heel shape design for better fit