Josie by Natori Women's Precious Convertible Push-up Balconette Bra Body: 84% Nylon/16% Lycra Spandex; Mesh: 90% Nylon/10% Lycra Spandex Hand Wash Contour, hidden underwire cup shapes and supports with medium graduated padding along bottom and sides of cup Center panel - lightly padded foam center Strap detaches at mid-back so you can create an instant racerback, and also detaches at back edge