Turning One Girl Foldover Invitations. 8 invitation cards and 8 envelopes per package. Front Cover shows Youre Invited! with adorable pinwheel design accented with the number 1. Open up to include space for you to write in For, Date, Time, Place and RSVP. Invitation card size is approximately 5 in x 4 in (12.7cm by 10.16cm). Lets invite your friends and family with these darling pinwheel themed invitations.