Sock wool, or sock yarn, is mostly 4 ply but you can also get DK yarns. There are several plain sock yarns but the self patterning sock yarn is the one that seems to have got the knitters attention. Sock yarn is also useful for gloves and hats.
Bamboo Sock Yarns
Sock yarns are usually 75% wool and 25% nylon, but we also have 75% Bamboo with 25% nylon, ideal for the Summer.