This Hardbound art book contains the same high-quality paper used in Strathmore fine art pads. Its lightly-textured matte covers are an attractive dark brown and the durable Smyth-sewn binding allows pages to lay flat. The 100% cotton fiber, acid- and lignin-free archival paper is excellent for watercolor, gouache, acrylic, graphite, pen and ink, colored pencil, marker, pastel and collage. The paper is internally sized for wet media with a durable vellum finish for drawing techniques. No sizing or taping down needed. 90 lb. Acid-free.