This Reeves Artist Sketch Pad is suitable for use with pencils, coloured pencils, pens and charcoal. The thick paper is acid-free so it won't cause a negative reaction with your art mediums or cause discolouration. There are 30 sheets, or 60 pages in this sketch pad. The paper is 90 gsm so you don't have to worry about inks bleeding through to the next page. This sketch pad is a handy A5 size making it ideal for taking on the go. The pages are acid-free so they won't react with your art mediums or cause discolouration over time. This product is FSC certified, so you can be sure your purchase supports healthy forests and protects wildlife.