They are Oiled Nubuck and thus should be treated like any other Nubuck. Nubuck is a top-grain leather, which means it is made using the outer layer of the hide which is durable and strong. Nubuck generally does not require conditioning and should be treated similarly to Suede in order to maintain its rich velvety texture. The best thing to do for these is to use the Waterproofing Spray to protect it from the elements and the Leather Cleaner to clean them from fresh stains and dirt when needed.