The A4 Invitation Envelope (4 1/4 x 6 1/4) in 80lb. Crystal Metallic is a shimmery, soft white colored envelope. It features an elegant deep plunging contour flap, peaked with a slight curve at the tip, and is perfect for RSVP cards, invitations, announcements, and notes. The A4 is easily sealed by Moistenable glue along the back flap, and its dimensions make it the ideal 4" x 6" photo envelope. For social and invitation purposes, the A4 is also a great reply envelope as it easily fits inside A6, A7, A8, A9 and A10 size envelopes. Available plain or printed for customization, branding and creative uses, starting in small quantities of 50 to large quantities of 50,000 and more.