Springfield Marine Twin 46 Flip up Boat Seat The Springfield Marine Twin 46 Flip up Boat Chair offers versatility and comfort to any boat. The foam padding offers a comfortable seat out on the water. Flip the chair to the fore and aft positions for just the right support you need. The flip up bolster makes for an easy to lean spot. Marine grade vinyl keeps the seats safe out in the water and sun. Features Off-White upholstery Back moves fore and aft Flip-up bolster Universal mounting pattern 5 x