This Ad Marker pad features bright white, smooth coated paper that is ideal alcohol and solvent markers. Achieve clear, crisp lines with this specially coated surface. This pad features an InkBlock panel, to be inserted underneath the working sheet to prevent any marking or indentations to the sheet below. 65 lb. (175 gsm) In&Out Pages™ are micro-perforated for eventual display In&Out Pages™ allow you to remove and reinsert