The extra-wide, contoured seating surface and curved seat back of these fold-down seats deliver more stability and less fatigue. The super-strong 100% copolymer frame has plenty of UV inhibitors. Premium foam padding keeps its shape season after season, while Actionhyde marine vinyl provides long lasting durability. Mounts to any standard 4-bolt pedestal or swivel. Seat depth: 17". Overall: 20"W x 19"D x 14.5"H.