Beautiful boots in great condition but after receiving them I think I'm going to keep looking for a calf version. These do run large. I usually wear a 40/41 in boots and I think this will accommodate up to a small 42. Material is waxed reversed leather; the upper portion of the shaft is folded over itself so you can't see the smooth leather until you look a few inches down. Not suede but a little nappy. Please message me if you have any questions. Thanks!