Opal Sport Sock Yarn
3.5-oz (100-gram) balls of Opal Sport sock yarn. Each ball contains approximately 465 yards. One ball is enough to make one average size pair of socks.
This yarn is machine washable. The polypropylene content in this fiber blend gives socks better temperature and moisture control.
60% Superwash Wool, 25% Polypropylene, 15% Nylon. 32 stitches = 4 inches on U.S. size 1 knitting needles.