This is a stylish set of 3D Removable, repositionable vinyl wall decals which each measure 12.5" x 12.5" (set of 3 included as shown in photo). These wall decals look like lighted wall niche shadowboxes with vintage model cars inside, yet these are just a flat wall decal which is super easy to install. They create the illusion of a nichea and are great wall decor for homes, nurseries, shops, offices, clinics and more! Use them over and over and they leave no residue or stickiness behind when you remove them. The surface you apply them to must be smooth, clean, dry and free from dust. Not to be used on newly painted or sensitive surfaces. Simply peel the backing and apply the decal to the desired area. Smooth it out starting from the top and working downwords. Use a clean soft cloth to press the entire decal into place. An amazing 3d effect without the mess of wallpaper, stickers or paint!