Rite in the Rain Field-Flex Pocket Notebooks are small and flexible, perfect for keeping in a pocket. Just like the classic spiral bound, the memo books are "go-anywhere, anytime, in any weather". This bound notebook has 56 sheets (112 pages) with the "universal pattern"- 1/4 inch rules with a faint 1/4 inch grid. The tactical books have tinted pages- in green or deset tan. Yellow memo book pages are universal pattern on white. Three and 1/2 inches by 5 inches in size. Use a ballpoint pen or pencil for notetaking in any environment. If you are looking for a durable, waterproof, near-indestructible field notebook, then look no further. Give one a try- take some notes, then take it in the shower and see how it fares. You'll be surprised!