Abstract: Devices, apparatus, kits, systems and methods for protecting sides of wood, plastic or metal posts from damage with easily attachable plastic panels. The panels can provide marking surfaces for addresses on mailbox posts, as well as a surface for applying desirable colors and indicia designs thereon. The panels can each have one side edge with a C shape with open socket, and an opposite side edge with an arrow tip and catch. The panels can attach to one another by having orienting and positioning the arrow tip and catch on top of and into the open socket of the C shape edge. Alternatively, the panels can attach to one another by pushing the side edge with the arrow tip and catch sideways into the open socket of the C shape side edge so that arrow tip and catch snap within the socket of C shape side edge. Plural panels can be attached about a base of a post such as a rectangular or circular cross-section mailbox post or fence post or deck post, and the like.