If so, the ones we have had (the binders that zip all the way closed, right?) tore up pretty quickly. They'd probably be okay when not overstuffed...my kids' binders seem to have always been (and still are) stuffed to the gills since the start of middle school.
I just buy the Avery 3" or 4" plastic binders in bulk on Amazon (like a quarter of the price there vs. Office Depot...the only place you can find that size around here) at the start of every school year. Then when they start to break, they just grab a new one. Mine probably go through 2 to 3/year.