If your calves are the size of a child, you will love these.  I have small, thin legs and the calves of the boot cut into my calf where under no circumstance would I be able to wear them without extreme discomfort.  I wear a size 7.5 M and no half sizes were available, so I sized up to an 8 M, and it was a tight fit to get into.  If the calf part wasn't so small (this is boot on bare calf) I would have exchanged them for a size 9.

I am returning them for a refund.  Even though, I believe I was mislead concerning the calf size, I have to pay return shipping anyway "because it wasn't Amazon's fault".

Buyer beware.