I was looking for a black knee-high casual boot this season with a low heel/treads and that would fit my athletic calves. I ordered these, thinking that they would fit the bill. The boots fit me fine with my usual size 8.5, and the materials seems pretty durable. They zipped up fine as well, even when I had my jeans tucked in (for reference, my calves are about 15.5"). My problem was how they looked once they were on. I liked the sides of them, and the back, but it was the toe that bothered me. The fact that the sole sort of "wraps" up to the top of the toe make it look like I was wearing Eddie Munster/orthopaedic boots - not the look I'm I was anticipating. So, these went back and I'm looking again.