These binders help me organize my first grade materials....Readers and Writers Workshop papers anecdotal records of my students and just about everything else>>>>>>love them!!!
I love the ease of opening and closing the D rings. One push of the lever. It doesn't take massive strenth. The D ring is great. Your papers lay flat. The pockets on the sides are easy to get things in and out with them being cut on an angle. The hinge on the binder helps it to lie flatter. My son is using the 1/2" binder for his music folder and he can place it right on his music stand. It's great.
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.