Insecurity envelopes are the next big thing when it comes to mailing your letters. Granted the actual practice of mailing letters is a wee bit antiquated with the advancement of technology, but it doesn’t mean that the insecurity envelopes are any less cool.

According to DesignYearbook, “Insecurity Envelopes are a series of laser-cut envelopes that JK Keller developed based on the patterns printed inside security envelopes.” A word of advice though, I would not be sending cash, cheques or money orders in the insecurity envelopes anytime soon.