Bali Women's Active Lifestyle Extra Cover Wire Free Cup, Back, Center Belt: 93% Polyester, 7% Spandex; Cup Linings, Strap Extension Linings, Strap Pad: 100% Polyester; Cup Pad: 100% Polyurethane; Inner Center Belt: 100% Nylon; Center Belt, Frame, Side Belt, Strap Extension: 73% Nylon, 27% Spandex Imported Machine Wash Contour wireless cups have light foam padding for modesty, shape and support Covered elastic at top of cup Covered elastic underhand for added support Center panel - tall with arched underside for high tummy comfort 2-ply, tall, seamed sides and back feature encased elastic for custom fit