Square envelopes are perfect for announcements, special events, corporate dinners, wedding reception invites, greeting cards, holiday cards, other invitations, direct mail, or general use. With a modern, square back flap and sleek design, these envelopes will compliment your stylish invitations, tasteful thank you cards, or meaningful notes. They are excellent for any formal or business occasion and also work well as shipping envelopes for a variety of small or flat items. You can’t go wrong with such a versatile choice. In addition, these envelopes feature a moistenable glue sealing method on the flap! Simply moisten and press down to seal your envelopes. You’ll get a great seal every time. The 28 lb. text-weight envelopes are an excellent choice because they are durable and will protect whatever you use them for. The sturdy and durable thickness of the envelopes in this 500 pack makes them perfect for shipping long distances without bending or tearing. When printed on, LUX envelopes are complemented with a wide variety of ink colors. You won’t have to worry about paper jams, tears, or ink smears with these envelopes. These envelopes are also ideal for addressing notes and invitations by hand. Whether you use a gel pen or calligraphy pens, you’ll be impressed with the high-quality, smudge-resistant paper. These envelopes measure 13” x 13” (330 mm x 330 mm).