Gap Fit Breathe women's long-sleeved, slit back top. Size medium

Gap Fit Breathe women's long-sleeved, slit back top in gray, blue stripes. Size medium Measures 19" (pit to pit) x 26" Excellent pre-owned condition with no snags or stains. No laundry tag or fabric type but it's a poly/model/spandex blend, machine washable.