Wise Pro Pedestal Marine Seat is a unique design. It is designed to be kind to your boat and your butt. The seat measures 5 1/4 inches in height, 14 3/4 inches wide and 11 inches deep. The Pro Seat has a high impact plastic frame, compression foam padding and is plastic sealed to resist moisture. Concave back for lumbar support. Heavy duty 28 ounce marine grade vinyl and UV treated to resist mildew and fading. Mounts on any standard pedestal or swivel.