The binder is made out of sturdy sewn papers that will not easily fall apart or get ruined by bleedthrough. This keeps your documents looking as good on the inside as they do outside, and also reduces any messes you might make when working with them!These Promo Notebooks are the perfect way to keep track of your life and all its responsibilities. You can use them as a diary, planner or calendar with their many different features that will benefit any type person who needs organization in there busy day-to-day lives!