A7 Invitation Lined Envelopes (5 1/4 x 7 1/4) - Navy Blue w/Silver LUX Lining (250 Qty) | Perfect for Invitations, Announcements, Sending Cards, 5x7 Photos | Printable | 80lb Paper | FLNV4880-03-250 Size: A7 Invitation Envelopes 5  in x 7  in / 5.25 x 7.25 / 133.35mm x 184.15mm Quantity: Pack of 250 Color: Natural w/Silver LUX Lining is a navy colored envelope with a shiny, silver foil lining on the inside. 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.