Dimensions: 900 x 48.7 cm (4m ²) Color: gray / blue Material: Wallpaper with paper top layer and non-woven back. Other: True colors wallpaper in high resolution and wiped off with a soft cloth. This wallpaper is a class A double layer non-woven wallpaper (non-woven). The wallpaper by Piet Hein Eek is unique. That is not a board made of old wood is the same, each roll of wallpaper is of course the same.