Wise Deluxe Helm Chair with 15" Locking Pedestal and Seat Slide Bracket: * Heavy duty thick wall rotational molded plastic frame * Molded-in arm rests * High compression foam cushions snap on and off for cleaning * Marine-grade embossed vinyl is UV- and mildew-treated * Embroidered logo * Pedestal is ABYC rated Class AD Driver * Premium 2-7/8" thick wall anodized aluminum post * Cast and e-coated aluminum seat mount swivels 360 degrees and locks down tight * Premium seat slide allows 5" of fore and aft travel * Raised aluminum deck plate features 6 mounting holes * Seat size: 18.25"H x 20.5"W x 22.5"D * 33.75" height with pedestal