Bleacher Chair are raise, tiered rows of seats found at, sports fields and other spectator events. Stairways access the horizontal rows of seats, ofter with every other step gaining access to a row of seats. Seats range from simple plank seats to more elaborate seats with backrests. Many bleachers are open to the ground below so that there are only the plants to sit and walk on. Some bleachers have vertical panels beneath the seats, either partially or completely blocking the way to the ground.