The Hahnemühle Grey Book features a smooth light grey sketch paper which is well suited for Indian inks, fountain pens and acrylic markers, offering an alternative to traditional white backgrounds. Colours stand out well on the non-absorbing surface and can be highlighted with white accents. Due to the stitched binding, pages lay flat. The sketchbooks dark grey, hardback cover features a light grain that resembles wood and is finished with a red ribbon page mark. Acid free and extremely age resistant.