Our 12-in-1 Whiteboard Eraser features 12 separate felt layers. When the top surface is too soiled to erase, simply peel off for a fresh, new felt surface. These erasers feature a sturdy plastic holder for an easy grip. Eraser measures 5.75 long by 2.25 wide and 1.75 thick. Bundle includes 12, 12-in-1 erasers.