Wallies Peel and Stick Wall Play Wooden Blocks mural is made of durable, self-adhesive backed vinyl that can be removed and repositioned easily. Have fun using your colorful Wallies Wooden Blocks Wall Play mural to decorate your childs room. 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. Each package comes with 64 colorful blocks measuring from 3-1/4-inch by 2-inch to 5-1/2-inch by 3-inch. All elements are in bright, vibrant colors. The package measures 21-1/2-inch by 4-inch by 2-inch.