MEET YAK The YAK RIBBED sock is the core sock from YAHAE and we love this classic ribbed cotton blend sock that leans vintage menswear. Muted neutrals make this the perfect trouser sock. 70% Cotton/20% Yak/5% Nylon/5% Polyurethane For best results, turn socks inside out and machine wash gentle. Air dry Made in Japan FREE DOMESTIC SHIPPING AND RETURNS ON ALL ORDERS OVER $100 Any item sold at a discount of 30% or greater is not refundable/returnable.