One of the most popular type. Can be single (simplex) or double (duplex) layered. Cellulose is the main component of the product. They are very ecological, they let walls breathe, therefore they are widely used for bedrooms (children bedrooms especially) and dining rooms. They are very affordable and accessible, can be literary found in any design store. However, the colours fade away in the sun, and they are not washable. Some of the wallpapers are less resistant to moist, therefore it is hard to apply them to a wall without washing away some of the colour or them being stretched. Most of iconic “William Morris” and “Sanderson” wallpapers are made of cellulose.