I really like the convenience of having a solid pre-made package to send disks. The adhesive is already applied so it makes shipping disks super easy. Good price for these also.
It took me a minute to understand the folding correctly. If you fold it one way and the adhesive strips aren't both on the inside, flip it over and fold the opposite way. I know, it sounds easy, but I was stumped for a minute as their weren't any instructions.
I mail digital files to a lot of my clients.