I love this boot and think you might too -- especially at the bonkers price it has dropped to (!!) in the very short time since I purchased it for almost $100 more. (And frankly, this adjustable, full-grain leather boot was a decent deal even at what I shelled out.)
The Wheaton laces all the way down, from the very top of the shaft to the ankle. So it's easy to custom-fit to your calf. Without straining the laces, I was able to tighten the top circumference to 14" (though it looks smaller, doesn't it?), the midcalf to 12.75" and the ankle to 10.75 inches around.
Calf slimness: ****/5
In black, dark brown & whiskey. Find it at:
Amazon (under $100 in all 3 colors as of early June! hurry!)