UV-Coated postcards are perfect for calendars, schedules or any type of chart for a highly visible direct mail (or bulk mail) piece on a tight budget. Postcards are effective marketing tools used to communicate your message to prospective and current customers. These postcards are UV Coated on 1 side. One 3 in. X 1 in.12 mil. magnet is attached to the backside and can be mailed.