This yarn is just what the name says--the perfect yarn for socks. It's just a bit on the light side of fingering-weight yarn with 450 yards per 100 gram skein. The base is a nice tightly spun 4-ply made of 80% superwash merino and 20% nylon. The merino is extra soft at 19.5 microns instead of the more typical 21.5 microns in most yarns, so it's strong enough for socks but soft enough for great comfort. Of course, this yarn can also be used for anything from shawls to sweaters to hats.