The Vevor high-back folding boat seat is designed for boats, yachts, and ships with a durable PVC leather surface and thick sponge cushioning for lasting comfort. Its waterproof, wear-resistant, and UV-resistant construction is built to handle demanding marine environments. The foldable backrest helps save space when the seat is not in use. A rust-proof aluminum alloy hinge and sturdy PP frame provide dependable support. It fits standard 5.3" x 5.3" mounting hole patterns for easy installation.