"We used this enclosure card to include some additional details for our guests. This card is the same size as the rsvp card, which is my only negative comment. I would have liked if it was slightly larger to give some variation in sizes. Also, this card came with free envelopes which I thought was strange - in most wedding invitations this card has hotel information (or something similar) and would never need to be mailed back. Nonetheless, I accepted the free envelopes and hope to use them casually."