About this item Size: A7 Invitation Envelopes 5 ¼ in x 7 ¼ in / 5.25” x 7.25” / 133.35mm x 184.15mm Quantity: Pack of 50 Color: Baby Blue is a light, powdery blue color. 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.