Size 6, equivalent to a Women's Medium per the Oiselle website size chart.  Oiselle Ballard Black Mesh Sports Bra The Ballard Bra combines both weight-distributing straps and mesh inset detailing. Made of our crowd-pleasing Nyelle Compression, it's also incredibly soft, stretchy, and comfortable. - Nyelle Compression (90% nylon / 10% spandex) - Nyelle Mighty Mesh detail trim (75% nylon / 25% spandex) - Plya Power Mesh lining (96% micropoly / 4% spandex) - removable cups - 4 straps for comfort and support In excellent used condition. No stains rips or holes. Please see all photos for details and measurements. From a smoke free environment.