Vinyl Imported Wise 8WD015-3-710 Standard Pilot Chair with arm rests and snap-on cushions includes Wise WD399 mounting plate for flexible mounting options; Compact design provides comfortable seating ideal for small to medium size adults, youth and children Thick wall rotational molded high impact marine grade plastic external frame, includes a pre-mounted universal pedestal mounting plate with T-Nut inserts to fit standard seat mount or seat slider pedestal; Narrow inside width dimension provides a secure and comfortable seating experience Heavy Duty Marine Grade 28 oz. vinyl withstands the effects of sun, heat, rain and soiling under normal conditions; features heavy duty welting, embossed vinyl surface detail and embroidered logo Snap-on cushions constructed with compression foam padding for comfort and mesh underlay to expel moisture SEAT DIMENSIONS - Height: 18.25", Width: 21.5", Depth: 22.5", Sitting Depth: 17", Sitting Width: 17"