The clear plastic cover sleeve and inside front/back paper retainers (also clear plastic) are loose fitting do not hold documents securely. The cover sleeve is especially thin and I am sure it will tear easily in the corners under continuous use.
I use these binders for all of my classes. They come in a range of sizes and color so I can easy find the right size for each class and I don't get them confused with each other. Durable easy to use. Seriously my favorite binder I've ever used.
This is the sturdiest binder that you can find. My son went through a new set every month because they were not strong enough and would fall apart or the steel binder would not close after a while. This binder is well worth the money. The rubber around it makes it easier to grab and the edges don't end up falling apart. This is the only binder I will ever buy.