A bra includes a body made of silicone rubber and having an outline for mating with that of a female bosom. The body includes a reinforcing rib formed along a perimeter thereof. A rear member is mounted to an inner side of the body. An air chamber is defined between the rear member and the body. The rear member includes a plurality of protrusions formed on an outer face thereof. The protrusions are in contact with the female bosom for massaging the female bosom. Further, gaps are formed among the protrusions for ventilation.