BAND BIRTH CONTROL. BAND BIRTH CONTROL The vaginal contraceptive ring (also called ´the ring´) is a flexible, transparent, colorless vaginal ring measuring two inches in diameter that releases a continuous low dose of estrogen and progestin. Dosage schedule is easy to follow, as the ring only needs to be changed once a month (compared to birth control pills, which must be taken every day). The ring is inserted into the vagina and kept in place for three week in a row. It is removed for a on