Koh-I-Noor 5.5" x 8.5" Drawing Paper Pad with In & Out Pages, 70 lb. / 144 GSM, Side Wire Bound, 60 Sheets/Pad, 1 Each features a fine-tooth texture, a durable surface resistant to erasing. Dual loop, wire-bound construction features patent-pending "In & Out" pages that allow you to remove sheets from the pad for sketching, reworking, scanning and more. Upon completion, simply return the sheets into pad and can also be placed in any other Grumbacher and Koh-I-Noor wire-bound pad. Acid and lignin free formulation. Made in USA.