The RoToTo Low Gauge Slub Socks are made on traditional knitting machines from organic cotton with recycled cotton thread and a poly-blend for durability. Using a special hand-milled technique gives these mustard colored socks a marled look without sacrificing comfort or breathability. Size M = 8 to 10 Size L = 10 to 12 Breathable marled cotton blend Durable and meant to last Made in Japan Materials: 96% cotton, 3% polyester, 1% polyurethane