Enclose your special greetings in translucent envelopes. Hand decorate with pens, pencils, rubber stamps, or stickers, or laser print or ink jet (black) print. Sold in packs of 10. Acid free. Make those birthday cards, party, shower or wedding invitations, Thank you notes and special announcements, stand out. Translucent vellum envelopes are 5.25"x7.25' size A7, and U.S. Post Office acceptable.