I used these envelopes to mail several pages. The self-stick adhesive kept pulling loose. I needed to add tape to secure the envelope closed while in the mail. These wouldn't be secure against mail theft.
Very flimsy don’t seal real good. Returned empty ink cartridges was told I would get some sort of a credit. I didn’t ask for a credit so why tell me I’ll receive one when you don’t honor what you say. This has happened in the past a couple of years ago.