size: 40x150cm color: multicolour material: The wall stickers KEK Amsterdam are made of a beautiful, high quality matt wall film. The wall sticker is very thin so you get virtually no height. All wall decals by KEK Amsterdam are water resistant and can be easily cleaned. They can be stuck on almost anything, as long as the surface but hard and flat. Think of plastered walls, doors and windows in your living room, bedroom or nursery.