I have bought these before in store and generally find them very high quality. I have started using one box of the newly ordered and a few pages have been bent and are unusable for my projects. So far it is only a few. I hope I don't run into more damaged sheets.
Unfortunately these were just a tiny tiny bit too short (width wise). Papers DID NOT slide in smoothly as with other brands. It took much more effort to insert the papers. Once inserted the protector was a bit bowed and did not lay flat. I am not happy with these at all.
Heavy duty not flimsy work well and last. have used them in the past and they don't yellow or get brittle. They will probably still be around long after I am dead.