... sports furnitureProtable/ Transportable /Movable bleachersProtable Bleachers:Step Width: 600mm / 637mm / 664mmRiser Height: 250mmSeat Options: Aluminum seat,Vogue,Blow Mold ... stadium,training field,racing track etc.3.Seat options:Aluminum plank,Vogue,Pour mold one-pliece seating. Fixed ... in portable, permanent, or surface mount installation. Aluminum bleachers, movable bleachers for outdoor event