Well...mommy cards(or could be daddy cards) are small cards that have your child or childrens information on them. Like their address - your contact phone numbers - allergy information - medication information and their likes and dislikes. You can add other or more information to these cards if you wish. They are wonderful to pass out to your caregivers for your children. Like at play dates, for your baby sitter, at daycare centers and so forth. Helps pass on important information with a unique and charming twist.