Derek Lam for Athleta Black & Blue Top w/ Built-In Bra

Derek Lam for Athleta work-out top in pristine condition. Top is a size medium and stretches but not a great great deal. Approximate measurements laying flat are as follows: armpit to armpit - 15”; waist - 14”; bottom of top - 15”; length - 24.5”. Top is less stretchy in the bra part and should stretch an approximate additional 2” to possibly 4”. Top is much stretchier everywhere else and should stretch probably an approximate additional 4” to 6”.