Grumbacher Acrylic Paper Pad with In & Out Pages, 140 lb. / 300 GSM, 9" x 12" , Side Wired, 24 White Sheets/Pad, 1 Each features colors looking bright and crisp on this Grumbacher surface, and textures are easy to create. Paper feels absorbent and holds water well and it doesn't buckle easily. Optimally sized surface for all acrylic paints, markers and inks. Dual loop, wire-bound construction and features “In & Out” Pages (patent pending) that allow you to remove sheets from the pad for painting, 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. Made in USA with acid and lignin free formulations.