Pro Art Sketch Paper is a multi purpose paper for experimenting and perfecting techniques. It has a finely grained surface that is excellent for use with dry media, including: pencils, pastels, crayons, and charcoal. Pad 18"x 24" 50lb Acid Free 75pc Tape Bound- Bright white, acid free, sulphite sketch paper made with 25% post-manufacture recycled fibers that can be recycled. The sulphite process extracts the lignin from wood chips and produces pure cellulose fibers for smooth, bright white paper appropriate for all your dry media projects. Bound on 18" side. 81gsm.