A1 Invitation Envelopes w/Peel & Press (3 5/8 x 5 1/8) - Midnight Black (50 Qty.) Size: A1 Invitation Envelopes / 3 5/8 in x 5 1/8 in / 3.625" x 5.125" / 92mm x 117mm Quantity: Pack of 50 Color: Midnight Black USES: RSVP Cards, Invitations, Announcements, Notes, Greeting Cards and Thank you Cards EVENTS: Weddings, Parties, Holiday, Corporate, Banquets, Showers, Birthday Printable on off-set printing presses and some home printers.