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 After the predetermined time frame, a series of red bars will appear on the badge front, showing that the badge is no longer valid.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". Please note: This product comes in packs of 1,000 badges. Ordering a quantity of 1 means you will receive 1,000 badges.