Our 4-1/4" x 5-1/2" A2 Horizontal Pouch is the standard in pouches. Place a decorative seal or wrap on the outside and put your invite on the inside panel. It's a presentation your guests won't soon forget! The A2 Horizontal Pouch opens into a tri-fold with a pocket at the bottom - perfect for an rsvp, rsvp envelope and anything else you might like to include. It folds up to fit into a standard size A2 Envelope. Our A2 Top Flap Envelope would do the job perfectly.