-Soft padded seat for comfortable sitting experience-Ergonomic high backrest for strong support-Aluminum hinges for great sturdiness and flexible folding-Durable and waterproof PVC for long-term outdoor use-Suitable for any standard 4-bolt swivel or pedestal (not included)-Supports up to 250 lbs with the sturdy frame-Folding design with tie-down strap for easy storageâ-Â Durable and Waterproof Materialï.25š Each boat seat is filled with highly elastic sponge inside which ensures ideal softness