5.5 X 8.5 Invitation Envelopes 2016-08-29 | Lei Pick out the best 5.5 x 8.5 invitation envelopes from our wide variety of printable templates you can freely customize to match any party theme. Also read: Olaf Handmade Invitations Related posts:Country Western Wedding Invitations CatalogsMilitary Invitations WordingQuincenera Invitation Background DesignsFall Party Invitation WordingThe Good Dinosaur Birthday InvitationsCars Invitation Ideas