A reversible sock, why?
Because you can.
Because it means that you can put your socks on in the dark and not have to worry if they are inside out.
So called as the stitch pattern is completely reversible. By using a garter stitch short row heel and sole you can in theory turn these socks inside out and they will look exactly the same.
Pattern is in two sizes ladies medium and large
Photos of the green version used with the kind permission of William F Walker