-The package contains 2 folding boat seats-Fold in seconds making storage easier-Comes with exterior durable PVC and polyester fabric that are waterproof-5" thick high-density sponge not easy to deform-Superior aluminum hinges ensure firm connections and great rust resistance-Ergonomic backrest fits your spine for comfort-Equipped with a strong strap for fixation-5" between bolt holes suitable for most support base-Dual using methods in diverse occasions mounted on a supporting base or placed on