Please note this envelope size is not mailable via USPS. If you're looking to add a bit of sparkle to your next event, you'll like the #17 mini style (2-11/16” x 3-11/16”). The #17 mini envelope adds a unique touch to any announcement: coordinate with your favorite seating or place cards, or use with gift-cards on packages or flower arrangements; also holds several standard-sized business cards (2” x 3 ½” dimension). Available in an assortment of colors, you'll be sure to find one to reflect your personal flair!