Microfiber T-Shirt Bra Cup: 100% Nylon. Cup lining, back: 85% Polyester, 15% Spandex. Underlift: 81% Nylon, 19% Spandex bras closure Microfiber T-shirt Bra Fiber Content: "Cup: 100% Nylon. Cup lining, back: 85% Polyester, 15% Spandex. Underlift: 81% Nylon, 19% Spandex" Country Of Origin: USA or Import