Sturdy, subject-divided notebooks feature premium quality, bright white paper stock that allows you to use a variety of pen types without worrying about ink bleed-through. So, you can use both sides of each sheet without worry. Twin-wire spine makes it easy to fold the hard cover back flat, enabling notetaking on the go, even when no writing surface is available. Repositionable dividers can be configured and reconfigured again and again, an ideal feature for busy students taking notes across several subjects or courses. Slightly smaller than the American letter-size standard, European B5 books might fit a bit more easily into briefcases and backpacks.