The Strathmore 500 Series Mixed Media Hardbound Art Journal contains paper that is internally sized for wet media with a durable vellum finish for drawing techniques. Excellent for watercolor, gouache, acrylic, graphite, pen, ink, colored pencil, marker, pastel, and collage. This paper is 100% cotton, archival grade and is lignin and acid free. Hardbound Art Journals have a lightly-textured, matte cover in dark chocolate brown and feature a durable Smyth-sewn binding, allowing pages to lay flatter.