A7 Invitation Envelopes w/Peel & Press (5 1/4 x 7 1/4) - Natural - 100% Recycled (50 Qty) | Perfect for Invitations, Announcements, Sending Cards, 5x7 Photos | Printable | 80lb Paper | 4880-NPC-50 Size: A7 Invitation Envelopes 5  in x 7  in / 5.25 x 7.25 / 133.35mm x 184.15mm Quantity: Pack of 50 Color: Natural is an off-white color made from 100% recycled material. This envelope is made from quality 80lb. Text Paper. Opaque and not see through. Modern Square Back Flap. USES: Invitations, Announcements, Holiday Cards, Greeting Cards, 5 x 7 Cards, 5 x 7 Photos, Letters, Personal Mail, Direct Mail. EVENTS: Weddings, Parties, Holiday, Corporate, Banquets, Showers, Birthday Printable on off-set and digital printing presses and some home printers.