Buy these envelopes every year to hold papers for workshop packets. Never in the 10+ years have I had a bad envelope. Really This makes it awesome because I need exactly 200 and I would hate to have to buy another box just for a bad envelope. could be a heavier manila paper weight to make the envelope stronger. used it to send out calendars and they had binding combs and concern about it breaking out of the envelope. they didn't whew!The top envelope flap folds over below the clasp. Apparently the clasp was affixed to the envelope back in too high of a position. Not correctable by user. So we are stuck with forcing the flap into a shallower fold. Now the envelope is slightly higher than it should be. Thanks Kraft!!