NEW FLEXIBLE MATERIAL QUICKLY FLATTENED IN FEW SECONDS-The new material used by OFFICE AID is thick and elastic. Even if it is curled tightly from shipping, the reusable dryerase whiteboard roll can be quickly flattened without being rolled back in few seconds. Unlike thin vinyl dry erase sticker paper, which needs to be pressed with heavy weights for 4-5 days to flatten the rolled-up paper. ENOUGH THICK MATERIAL MAKES INSTALLATION EXTREMELY EASY WITHOUT BUBBLES OR CREASES. Our erase-laminated posterboard is made from a thick material that is half as thick as a 25 cent coin and 7 times thicker than thin vinyl paper. Are you tired of current market dry earaser stickers installation? No matter how hard 2 or 3 persons tried, it would not go up on the wall without bubbles and wrinkles.