Very sturdy winter boot; in fact, that's what rather surprised me when the boots arrived. By the photos, I didn't expect these to look quite so much like an outdoor wear, snow boot, but they do. They are leather, but it's been treated to look a bit like rubber. I thought they were going to be appropriate to wear to work in a school. I do wear them, but I would have preferred a more dressy, less "snow protected" look.