Wallies Peel & Stick Schoolhouse Green Chalkboard is made of durable, self-adhesive backed vinyl that can be removed and repositioned easily. Enjoy being creative with your Peel & Stick Chalkboard. To use, simply peel the pieces off of the backing in the package and apply to any clean, smooth surface or painted dry wall. This product is not recommended for textured or rough surfaces and should not be placed on newly painted walls, which usually need about 30 days to fully cure. To remove, simply peel and reposition to another area or return it to the original backing for storage. Wallies will not harm or damage surfaces and will not leave a sticky residue. A package of Schoolhouse Green Chalkboard comes with 2 vinyl chalkboard panels measuring 9 inches by 12 inches and includes chalk. The package measures 10.5 inches by 4 inches.