This expiring badge back combines with a one day or half-day expiring badge front to create a full solution. After the predetermined time frame, a series of red bars will appear on the badge front, showing that the badge is no longer valid. This badge back must be combined with a half-day or one-day (12-14 hours) badge front for use. This badge back has an adhesive back, making it easy to issue to the wearer. Dimensions are 1-15/16" x 2-7/8".