SX-10 UES Melange Crew Length Socks- NavyThese crew length socks are made of 100% cotton (excluding shrink thread in the ribbed area). During the twisting process, the yarn is passed through a device called an air twister, which allows the yarn to be instantly twisted by air vortexes, resulting in a strong and durable fabric. Furthermore, because four threads are twisted together, the finished product has a melange like color that blends all four colors. 100% cotton Made in Japan Size L: 26