This large spiral notebook offers ample space for writing with college ruled lines, plus a double-sided header to add dates for organized note-taking. The set includes four black spiral notebooks, so you can customize the covers to tell apart different subjects, 320 total sheets/640 pages enough for up to 320 days of daily use. Featuring a firm, flexible twin-wire spiral binding that fits a pen, the notebook lays flat at 180 degrees, has perforated pages for easy tearing, works smoothly for both right and left-handed users while flipping pages effortlessly. It has a sturdy waterproof hardcover made of thick cardboard to protect the inner pages, paired with 100 Gsm thick paper that stands up to writing even while you hold the notebook. Versatile for taking class notes, meeting minutes, Bible study, writing, drawing and more, it works great in the classroom, at home or in the office. Available sizes: Dotted, Graph, Lined, Unlined