3 ply 100% wool or with a ply of cobweb lycra for extra stretch!  We spin it with more twist for longer wear. Each 400 yard skein is handpainted by us and is completely unique.  If there is a color you really don't like, please let us know but otherwise we will send you a completely unique surprise color.   It's called "Sox" yarn because that's what Jim spins for knitting socks on his Circular Sock Machine.     Our sox yarn is typically sold as a skein but if you would like it on a cone, please choose that option for an additional $.50/cone.