These customizable pre-printed #10 standard mailing envelopes save you time with a self-sealing flap and help convey your professional image. <br><br> <b>FREE return address personalization</b> on this envelope to include your business name and address. <br><br> <ul><li><b>Multi-Purpose:</b> Use for mailing checks, invoices, statements and other communication. <br><li><b>Self-Sealing:</b> Material on either side of flap adheres to itself to secure contents. <br><li><b>#10 Non-Window Envelope:</b> A basic business necessity for mailing common document sizes like 8-1/2 x 11 letterhead!</ul>