On the outside of the hardback Bamboo Sketch Book is a decorative design of bamboo canes while the inside paper is made of 90% bamboo fibres and 10% cotton rag. By using Bamboo, it is a more ecological form of paper production. The natural white sketch paper has a unique tooth surface which ensures great colour adherence when using pencils, charcoal and chalk. The bamboo Sketch Book is acid free and extremely age resistant.