This is an Athleta Advantage Cinch Top in Black. Excellent used condition. No flaws. Size M Measurements taken lying flat. Armpit to armpit- 20in Length- 27in 100% polyester • FOR: Commuting, work, and travel • FEEL: Performance poplin is lightweight, quick drying, and breathable with an easy stretch • FAVE: Drawcord can be tied at the waist for a custom fit • Hybrid construction features mesh ventilation on back to help keep you cool