This Pink Pig Own Brand Watercolour Book is spiral bound. This watercolour paper is made in the Lake District on a twin wire machine, giving a good painting surface on both sides of the paper. Great for painting with watercolour, acrylics, gouache and inks as well as sketching and drawing, with pencil, charcoal, pastels. A very popular book in Schools and Colleges throughout Britain. Pink Pig Sketch Books are made in Britain, Huddersfield to be precise. 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. The Pink Pig Sketch Book contains 25 leavesof 270gsm, acid free Watercolour paper and has a practical hard back cover which acts as a support when painting as well as providing robust protection for the artists work.