mine is made with 2 4X8 Sheets of 1 1/2 inch foam insulation board. Had to cut the length to 6 1/2 feet, as my ceilings in my sewing room are low. I taped the 2 sheets together, with strapping tape on one side, so I can fold it in half when not in use. I then covered it with white flannel. It works great to have a 6 1/2 foot by 8 foot design board. Have fun.