Best binder we've found for school. Lasts a whole year without ripping at the spine even when using the same binder for ALL subjects so it's quite durable. The one drawback & true of all binders (unless they're cloth) is that the inside plastic pocket rips early on as they stuff all their take-home papers in it each day. Needs to be more flexible/expandable.
The only thing I would have liked differently was an additional open/close tab at the top of the rings. Although it was easy for me to open my second grader struggled a bit with opening the rings.
We can now have most of quintet's music in hand all the time. It protects the music much better than others. This binder is well made and reinforced at just the right places.