The S-150 is wrapped in sling fabric. Ideal for relaxing under the sun or shade. Built with all aluminum supports, stainless steel nuts&bolts for durability. We use only high grade aluminum with a professional multi-step powder coating process to guarantee no rusting ever! Fully weather resistant and no maintenance required. -Here at Florida patio we're trying to do our part in going green by recycling all unused materials. And exploring new ways to make our environment a better place.