Strathmore 400 Series Heavyweight Drawing Pads offer a medium surface with slightly more texture than the 80 lb. 400 Series Drawing pads. These pads have a surface that is durable enough to stand up to repeated erasing and reworking. The cream colored drawing papers are ideal with pencil, colored pencil, charcoal or sketching sticks. Strathmore's acid-free pads feature wire-bound sheets that are micro-perforated and are actual size when removed at the micro-perforation.