Strathmore 300 Series Bristol Paper is an economical, heavy-weight 100lb, acid-free paper in a choice of two surfaces.
Smooth surface bristol paper is good for technical applications in mechanical drawing, marker, pen & ink and airbrush.
Vellum has a bit more texture to better accommodate graphite pencil, colored pencil, charcoal, mixed media and oil pastel.
Measures 22.5" x 28.5".