David Francis Furniture Coronado Stacking Lounge Chair, Cafe. Powder-coated aluminum frame. Ecolene fiber seat and back. No cushion required. Stackable, up to three high. Intended for interior/exterior use. Store frames upright to prevent water buildup. Do not store in freezing conditions. Clean bi-monthly with warm water solution to prevent salt build-up and preserve finish. Residue from floor or patio cleaning chemicals will deteriorate finish.