Guests write messages to the couple on the included 3 1/2" x 2", white cards. The silver book has cards pre-printed with the phrase, "Share a Wedding Wish, Memories for Us to Treasure." The white book has cards pre-printed with the phrase, "Share a Wedding Wish." 75 cards are included. After the wedding, the cards are inserted into one of these specially designed "A Book of Wedding Wishes". Each 4 1/2" x 7 3/4" book features clear sleeves for holding 72 cards.