It's taken me over three years of trying to find a boot to fit.  Up until now, I could not find a boot that was made for a calf bigger than the size of a twig.  This boot fits!!!  The expandable piece in the back stretches to fit the top part of my calf, and honestly, my calf is not big; it's just larger than centipede.

It gets better!  The boot is comfortable.  The instep is cushy, and very comfortable.  I'm thrilled after three years I can wear boot with a skirt or dress.  Finally, a terrific boot for real women!