What is a 'simple seal' envelope?

A simple seal envelope is a type of self-seal envelope built with "Flip-n-Stick" flaps, designed to close on its own without any moisture. It is the easiest closure to use when you are sealing a large batch by hand.

Sealing one takes two steps:

• Flip up the bottom flap
• Flip down the top flap

The two flaps bond on contact and the envelope seals itself. Because there is nothing to lick or moisten, it is a clean, mess-free option that speeds up large mailings and avoids the gummed-flap taste and dry-out issues of traditional envelopes.