Whiteboard Decal Wall Sticker(18"x70") by Smic-Trade Bonus Includes Eraser, 2 Chalkboard Marker. S-for Smooth&flat, as long as the facade is smooth and flat, doesnt matter its wall, wooden,ceramic tile or glass, all of them can be sticked to. M-for Removable, it made of premium vinyl, can be removed without glue remaining, no damage for your facade. I- for Imagination, tailored size or patten available, backside is grid measurement, create your own size or patten to decor your imagine room. C-for Creative, a great product for kids graffiti, inspire the potential creativity. B-for 4 Burnous, besides 18"x70 wall decal, each one also contains: 1 eraser, 2 blue chalk pens.