Sockwell Women's Ringlet Knee-Hi Socks 32% merino Wool/32% Bamboo Rayon/31% Nylon/5% Spandex Made in US Offers arch support, turn welt top and Seamless toe closure with reinforced toe and heel box helps keep the sock in place throughout the day Spandex throughout the sock prevents slippage and ensures a snappy fit throughout the day Ultra flat toe seam for superior in shoe comfort Turn welt top helps keeps the sock in place Y heel shape design for better fit