Draw more with these pocket sketchbooks. They're made with tear and water resistant covers. The inside comes with lined bright white paper. The paper has the perfect amount of smoothness and tooth for multiple uses including pencil, pen and brush. Measuring 3.75"x 3.5" they are the perfect size to fit your medium Sketch Wallet or to carry with you. The square format is great for Instagram! Books contain 60 pages (30 sheets). Refill pack comes with 3 books.