Patented no-pinch hinge system replaces restrictive support straps Breathable mesh fabric sitting surface, withstands the effects of sun, heat, rain and soiling under normal conditions Aircraft grade aluminum construction, powder coated finish, accessorize with gear holding expansion slots 5” hole pattern compatible with standard marine pedestals and seat slides SEAT DIMENSIONS - Height: 19.75", Width: 19. 75", Depth: 25. 5", Seating Depth: 18"