Only used briefly once after purchase. They didn't fit my foot shape, so I'm selling them to someone who will wear them. The surface is still very clean, but the soles have some scuffs from being on asphalt, even though it was only for a short time. I threw away the tag, so I'm not sure, but I believe they were made of cowhide. The soles are marked 24.5, but they feel a bit larger when worn. I am a non-smoker and I do not have any pets.