This Pentalic Hardbound 8.5x11 Inch Sketchbook contains 110 sheets of white, 70 pound (144 gsm), acid-free paper. The sturdy, elegant cover features a leatherette texture and keeps your artwork and notes intact while providing a firm drawing surface. The hardbound spine is specially designed to lay flat while in use and conveniently stands upright on a bookshelf. This book is perfect for sketching, writing, and classwork. Paper is sourced from certified sustainable forests.