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. Bright white, acid free, sulphite sketch paper bound on the 11-inch side with a versatile twin loop binding wire, which allows book to lay flat or fold into a single page without closing. 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. 110gsm.