These are the most durable binders I’ve found! I have at least seven right now in various colors. I really like the D-ring style as it holds more & you don’t have to fight to get rings closed. I very much like the different more rubber-like material used on the “hinges” (where front & back join to the spine of the binder). That material doesn’t crack & split like most binders & it’s used on the outside edges of the front & back as well. A very durable binder.