A long run or intense aerobics class is no match for the gravity-defying support of an encapsulating compression bra with molded cups, trimmer straps, and an open back that works under leotards. Back hook-and-eye closure. Lined. 88% DriLayer® polyester, 12% spandex. Machine wash cold, line dry or tumble dry low. Medium-impact support; ideal for running, training and cardio. Approximate measurements laid flat: 16.5" pit to pit 14.5" across bottom band 13" length In great used condition.