Strathmore 300 Series Visual Journal-Bristol Vellum paper with vellum finish is an acid free, 270 gsm thick paper that is high quality for finished art works. The vellum surface makes this paper very good for use with graphite pencil, colored pencil, charcoal, soft pastels, sketching stick, mixed media, airbrush and oil pastel. Strathmore Visual Journals deliverhigh-performing papersandheavy-duty featuresengineered to meet the intense demands of an artist’s creative process. The removable cover sheet reveals a subtle, hand-illustrated cover design. The wire binding allows the journal to lie flat and open upto 360 degrees.