As with all of our Standards, the Sail Wing Standard has a main post built from exterior grade wood. The jump support post has holes every 3", as well as a flag hole drilled in the top of the post. Our "sail" begins at the top of the main post and has an arched slope down to the ground, away from the main post. The sail is made of untreated plywood. For better protection we would recommend one of paint/stain treatments. This panel is also a great place to offer advertising space or custom graphics.