Pregnancy really can be a struggle, but having breasts that are different can be even more frustrating. Women's breasts are all unique and different. Each breast replica can help educate training medical staff as well as new parents. Each breast is made of soft, lifelike material and includes an instruction card and storage box. Includes Inverted Nipple (LF00860U), Mastitis (LF00861U), Flat Nipple (LF00862U), and Lactating Breast (LF00863U). 5-year warranty.