Square envelopes are perfect for announcements, special events, corporate dinners, weddings, greeting cards, holiday cards, invitations, direct mail or general use. With a sleek square flap, square envelopes are designed to compliment your stylish invit ations, tasteful thank you cards or meaningful notes. Please note: most square envelopes require additional postage. Take notice of the center seam if printing on the back. These envelopes are sealable with Peel & P ress.