Each title contains 16 different sheets of superior acid-free drawing paper,printed with exceptional designs in very light lines. The printing is done in such a way that, depending on the techniques used, the original outline will be hardly visible after colouring. Suitable for Framing. PEPIN® Artists' Colouring Books match the quality of the finest artists' pads. They are perfectly suited to practice colouring skills and create beautiful pieces at the same time.