Sock Yarn for Knitting Socks yarn is mainly based on cotton, because cotton is more absorbent, other bamboo fiber, polyester cotton of these counts, depends on the thickness of your socks to determine, usually woven socks yarn, 21S,32S,40S are useful, if you want to contain less cotton, it is polyester cotton, or bamboo fiber/cotton blend. Sock yarn is a general term, according to the raw materials are divided into cotton yarn socks, wool socks, and various types of chemical fiber socks. According to the shape, there are long socks, middle socks, short socks, etc., and flat mouth, ribbed, with heels, without heels and jacquard, woven flowers and other patterns and varieties. Although socks are only a supporting role, they are no less popular than fashion. Specification