This new Watercolour paper concertina from Sennelier offers a unique and innovative format within which to use watercolour as well as a whole host of other materials and media. Produced from 100% pure cotton, the 300gsm paper is acid-free and has a Rough surface texture. With its attractive green linen textured cover this book is 16 x 24cm and features 12 sides of paper. It can be pulled out much like an accordion – it could even be used to produce one long panorama or a sequence of drawings or watercolours, which can be displayed and viewed together.