Smart+Sexy Women's Ki Lace & Micro T Shirt Bra Cups: 88% Polyester, 12% Spandex; Lace: 94% Nylon, 6% Spandex Imported Adjustable closure Hand Wash Cups: 88 percent polyester, 12 percent spandex. Lace: 94 percent nylon, 6 percent spandex Smooth, no-show cups Underwire support Adjustable straps Back hook and eye closure