I ordered these boots on Cyber Monday at a great price and was so excited to receive them.  Since I had never had problems with my calves being too large for boots, the thought never crossed my mind...until I tried these on! I could only get them half way up.  So, I measured my calves and they are about 14.75" and the opening for these is supposed to be 15.75"! I think a full zipper would have solved this issue for me, but the zipper on the back of the shoe is only decorative.  So disappointed because these are great boots!