Union Square Layout Bond Drawing Paper is an acid-free sheet, which accepts all dry media extremely well. Its semi-opaque, 31lb weight is ideal for tracing, illustrating ideas, jotting down notes and quick sketches. The only mark on the Union Square Pads is the Union Square logo, a mark that expresses the importance of the pad's contents. The rest of the drawing pad cover is intentionally left blank, to allow artists an opportunity to customize and create their own cover. Be sure to use Union Square Layout Bond Drawing Paper to document your ideas, dreams and art! Each Union Square drawing pad is enveloped by a high quality cover stock sheet and a 1.75pt, black, backing board. These drawing pads are enduring and can hold up to being transported on a daily basis. Each pad includes 50 sheets. Union Square Layout Bond Drawing Pads are available in 3 popular sizes.