Edith’s Bra Discs must be worn with a bra. After adjusting your bra, center the Bra Disc between your breast and the bra. These nipple covers have no adhesive. However, your breasts as well as body heat will keep them in place. Disks may be cleaned with mild soap and water, towel dry. This product is made of a non-latex resin and is waterproof. Available in both light and dark skin tones.