This 70 lb/144 GSM bright white paper features a fine-tooth texture, and 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. Sheets can also be placed in any other Grumbacher and wire-bound pad Acid and lignin free formulation Made in USA