With these luminescent, shimmery, metallic ivory envelopes, your DIY invitations and cards will definitely grab the attention of your guests and customers.  These 5.5 inch square envelopes are just the right size for your next square invitation or note card.   These 80 pound text weight envelopes are superior in quality and have a beautiful iridescent finish.  Curiously unique!

Please check the USPSweb site for mailing regulations on square envelopes