What is the difference between a simple seal and simple seal security tint envelope?

Both are simple-seal self-seal envelopes, so you turn up the bottom flap, turn down the top flap, and on contact the envelope seals with no water needed. The one difference is privacy.

• The simple seal is a plain interior envelope.
• The simple seal security tint adds a printed pattern inside that blocks the contents from being read through the paper.
• Choose the security tint for checks, statements, and confidential documents.