Springfield Marine Fish Pro 100 Folding Boat Seat The Springfield Marine Fish Pro 100 Folding Boat Seat has a contour lumbar cushion that cradles your back for maximum support. The deep mesh pocket on the back of seat allows for secure and easy to use storage. Weather resistant vinyl provides excellent protection out on the water and in the sun. When not in use the seat folds down. Featuring a universal pattern of 5 x 5 5 x 12. This boat seat has been designed for comfort, durability, and style