Reusable mail bags are one sure way to save money in the mail center. If you are sending and receiving mail from other offices out of state or sending memos to reps around the country you should look at using reusable mail bags / round trip mailers.
Light weight nylon mail pouches can be sent back and forth hundreds of time before replacing them, Compare that to a one time use envelope.
Nylon reusable mail bags are used when there are light weight papers being sent back and forth to reps in other states. Heavy duty vinyl reusable mail bags are used when the samples are heavy or sharp. Extra capacity reusable mail pouches are made of the same heavy duty vinyl but are gusseted for more capacity. The pop open reusable round trip mailers are used in a sorting center and you can sort directly into the mailer. Charnstrom even has clear see - thru courier reusable mail bags.
Charnstrom has many different styles, colors and sizes of reusable mail bags / mailers to choose from.