Hahnemühle 100% Cotton Watercolor Books feature a sturdy black cover and matching bookmark with an elastic closure to protect your sketches on your adventures. These elegant books can open to lay flat and are perfect for artists who enjoy a beautiful, fine-grain texture, soft paper feel, and the ability to use a range of wet-in-wet watercolor techniques. Each book includes 30 sheets (60 pages when using both sides) of 100% cotton rag 250gsm paper in natural white. Hahnemühle 100% cotton rag is vegan, acid-free, and age-resistant.