Turns any surface into a dry-erase surface - wall, desk, door, refrigerator Clear and appears nearly invisible Will not damage or leave a sticky residue on surfaces Comes with expo marker, installation squeegee and velcro to stick marker on wall The Think Board super sticky dry erase surface is designed to stick to a variety of painted drywall and steel surfaces, glass, finished wood, and existing whiteboards or chalkboards. The Think Board dry erase surface is easy to install and requires no tools - just unroll, peel and stick. Utilizing a proprietary dry erase coating, the Think Board dry erase surface is stain-proof, erases cleanly every time and writes smoothly. From horizontal applications on desks or tables to vertical applications on surfaces where traditional whiteboards cannot be installed, such as windows, the Think Board dry erase surface can be cut-to-fit and provides endless possibilities for dry erase solutions in new places. It's even great for replacing old dry erase surfaces that may be ghosted-simply apply over the existing board and it looks new again.