I use these binders to keep my lessons organized for each of the middle and high school classes I teach. They get opened and closed numerous times throughout the day. Even after several years they still hold together well. The clear cover and spines make labeling them easy and are perfect for papers I need to pull out often. The classes I teach can change from year to year so it is nice to have a variety of colors to keep track of which subject is which. The D-ring clips make it easy to open and remove or add papers even when the binder is quite full.
I have been buying my daughters these binders for some time now and am very happy with the quality. The rings do not come apart not do they get stuck like most binders so. They are the perfect size to have one for each class. My girls love the array of colors that they come in so they can have a different one for each class.
These Staples binders are great for the kid's backpacks I donate every year. They are heavy duty and come in lots of colors for the kids plus the price is good to. I bought 4 of them.
I ordered these binders when they were on sale and received them within 3 days. Looking at the binders the rings are quite sturdy. Hopefully they last for a good enough time.