Breathable mesh fabric sitting surface. Patented no-pinch hinge system replaces restrictive support straps. Aircraft grade aluminum construction with powder coated finish. Breathable mesh fabric sitting surface, withstands the effects of sun, heat, rain and soiling under normal conditions. Accessorize with gear holding expansion slots. Stainless mounting hardware included. 5” hole pattern compatible with standard marine pedestals and seat slides. SEAT DIMENSIONS - Height: 19.75", Width: 19. 75", Depth: 28. 5", Seating Depth: 18"