The mini-"belt" near the top of the boot does not accommodate large calves very well. I had to add another hole in order to be able to fasten it.

Other than that, they fit well and are comfortable. Finally, knee-high boots without high heels!

Update: They fell apart a while ago, and while I tried to duct-tape them back together, they have been sitting sad, neglected, and forgotten in the corner of my closet. I went back to wearing boots with heels. Adjusted down to 2 stars.