Strathmore 400 is one of the most versatile sheets Strathmore offers. This off-white drawing paper, with a uniform surface, is ideal for sketching and most finished work. It readily accepts pen and ink, pencil, crayon, charcoal, light washes, and markers. Acid-free. Pads contain 24 sheets of 80 lb (130 gsm) paper, wire bound on the short side. Wire bound pads are micro-perforated and are actual size when removed at the micro-perforation.