This Large whiteboard sticker makes your wall become to a place for teaching, graffiti,reminder list. The surface is easy-to-write-on and easy-to-clean-off. It is written using the Liquid chalk pens in the package. It can be wiped off using a wet cloth or tissue without leaving marks. Application Instructions: 1.Choose a totally smooth surface that is clean and free from dust and moisture. You may use a damp clothes clean thoroughly the applying smooth surface. 2.Peel off the back film from a corner, stick to desired surface, use a card to squeegee out air bubble while peeling off the film. Package including: 36” x 60” Dry Erase Whiteboard Sticker Liquid Marker Pen