I don’t know when this style was sold by Hanes, possibly 1990’s? It features a pull-on style bra with attached slip body. The slip portion is a fairly stretchy nylon/spandex that might provide a bit of smoothing. The underwire bra cups are two-section with a horizontal seam and are unlined. The stretch straps are detachable so that it could be worn halter style, or with straps crossed or strapless. There is a band of silicone along the top around the back to help hold it in place.