This Pink Pig Display Book contains 25 leaves of 270gsm, acid free BLACK recycled paper This Pink Pig Display Book is spiral bound. The spiral binding allows the pages to lie flat so artists and students can work across two full pages for that really big idea. It also makes page turning quick and easy and the books more space efficient as they can fold over on themselves. Spiral binding is also more durable than glued bindings which after a period of time can deteriorate causing the pages to fall out. and has a practical hard back cover which acts as a support when sketching as well as providing robust protection for the artists work. Pink Pig sketchbooks are made in Britain.