Grumbacher 9" x 12" Cold Press Watercolor Paper Pad with In & Out Pages, 140 lb. / 300 GSM, Top Wire Bound, 30 Sheets/Pad, 1 Each was developed with an optimized sizing level to ensure good wet and dry lifting. Dual loop, wire-bound construction features patent-pending "In & Out" pages that allow you to remove sheets from the pad for painting, reworking, scanning and more. Colors look bright and crisp on this embossed textured surface, and wet-on-dry textures are easy to create. Paper feels absorbent and holds water well, and it doesn't buckle easily. Acid and lignin free formulation. Made in USA.