The stick-on decoration chalkboard offers a smooth red surface for writing with chalk or Bistro markers. The colours are vivid and can easily be erased with a humid sponge without leaving marks.Sheet dimensions : 9 x 12 inchesIncludes chalk and 2 vinyl sheetsChalk includedRemovable and repositionable.Write on them with chalk or chalk markers and wipe clean with a soft cloth.Works on walls, wood, glass, paper and more!Easy to remove, won't harm most surfaces.Please note: It is imperative that freshly painted walls be allowed to dry for a minimum of three weeks before applying wall adhesives, as the humidity may cause peeling.