The Wacoal Wirefree Nursing Bra 859321 has a no-wire design with extra light padding, a touch of lace at neckline, center and underside, and nursing clasps on cups that allow for one-handed release. A full inner cup sling helps keep breast supported and in place. Wacoal's Wirefree Nursing Bra is made of polyester/nylon/spandex.