I have bought several of this type of binder since they came out. The best feature that I know of is that I do not have to worry about the side seam ripping out. Even recommended this binder to several co-workers.
Purchased this binder for my 11 year old son who is in 6th grade. He is all boy and I think tears things up just to see if he can. This binder is the only one he has never tried to tear up and it functions and works beautifully. I would definitely purchase this item again. Well worth the cost.
Much better than most...I am converting all my old "durable" binders to this type because this type holds up much better to everyday wear-and-tear. Not the best....but probably the best for this price.