I've used these binders since 2015 and they have not let me down. They stay clean they are flexible and yet sturdy and stand up to heavy usage. I've only had one that the clasp didn't meet and would snag my pages when flipping through and it was after much use. I won't use any other binder now and definitely recommend! The only thing I wish it included was the triangular sheet lifters. But you can buy those separately.