I have about 18 in calfs which is a difficult size to have. They are just a little too big for normal boots and on the smaller size for wide calf boots. In every aspect these boots were too big. The circumference was too large, but I could have dealt with that. The shaft around the shin and ankle were ridiculously large, as well as the sole. I would not recommend this boot to someone who is only looking for a larger circumference, as I was, because it will not fit. Also if you choose to get these, order a size down.