60% wool, 40% poly.  Soft top sock, made in England by HJ Hall.  Colors: black, navy, brown, grey.  Size: fits shoe size 7 1/2 - 12 1/2.  Mid calf length.  Unique relaxation panels contract vertically to provide a gentle grip, so socks stay up without circulation constriction.

At last, a non-binding sock that stays up.