Cool mailers but...

I bought these mailers for my medium orders and when I received them I absolutely loved them (like my logo look hella good). I started using them and they were fine until I got to the last few of them. I don't think the sides of the mailers were crimped down enough, and they started to split open on the sides. I was not happy of course, but I managed to fix them with packaging tape (which did not look aesthetically pleasing). All in all, still cool mailers.