Product Features:♦WOOL MATERIAL INSERTED HIGHER DENSITY CLOTH GIVES EASIER WIPING AND GENTLENESS TO THE BOARD SURFACE.♦REMOVE WHITE BOARD MARKS ONLY, NOT THE OTHER PEN WRITINGS.♦EACH SHEET CAN NOT BE RETTACHED AFTER BEING RIPPED OFF.♦DISPOSAL AS FLAMMABLE RUBBERISH WHENEVER EACH SHEET IS EXHAUSTED AND RIPPED OFF.♦KEEP OUT OF REACH OF CHILDREN...