Strathmore-Mixed Media Vellum 12 in. x 9 in. side wire bound mixed media pad — 40 micro-perforated sheets of 117 lb. 190 g/m2 (medium weight) acid-free paper with a vellum surface. Ideal for mastering wet and dry media techniques and for use as an art journal. For mixed media sketches, practice of techniques and quick studies using watercolor, gouache, acrylic, graphite, pen & ink, colored pencil, marker, pastel or collage.