They, are the most durable composite or synthetic panels on the market. These panels are made entirely out of marine-grade gel-coats, resins, and fiberglass. The Endless Glass Panels are made in the same methods used on recreational boats, fishing boats, and multi-million dollar yachts. You can literally kick the Endless Glass Panels and they will not break. The Endless Glass Panels are virtually maintenance-free. If the panels get soiled, just rinse them off with your garden hose and your done. Just think no more sanding, staining, and/or sealing.