Benefits High Quality Paper The inner pages are made of high quality 100 gsm thick ivory white paper, which is easy on your eyes while writing or reading, prevents ink from bleeding through, and minimizes ghosting; Both sides of the 64 sheets are suitable for writing; Acid Free paper ensures that the pages can resist damage from light and air to keep the notes for long time; Quad Ruled (4 Square/Inch) Layout - blue horizontal and vertical lines create 4 squares per inch (4x4) for guidance when working, ideal for engineering and technical drawing, as well as notetaking and homework Sturdy Cover With the sturdy see-through plastic cover, you can customize the first page and easily recognize your notebook; The 1mm thick plastic cover is resistant to spills, grease and messes so you can always have your notes being perfectly protected. Full Size Notebook Paper Size: 11 X 8.5 Inch - 8.5 x 11 inches provides much more space for storing information compared to small A5 notebooks. Spiral Binding Sturdy double wire binding ensures firm binding and completely lay flat pages for easy writing. Care for Environment All the paper used to produce our notebooks are from reliable environmentally responsible sources. Both paper source and manufacturing facility are FSC certified. Value Value pack of 2 notebooks!