Bali Women's Perfectly Glamorous Minimizer Underwire Bra Top Cup Center Belt: 100% Polyester; Embroidery On: 100% Nylon; Cup Lining Center Belt Lining: 100% Nylon; Bottom Cup: 100% Polyester; Back Lining: 81% Nylon, 19% Spandex; Back: 76% Nylon, 24% Spandex Imported Hook and Eye closure Hand Wash Minimizes up to 1 1/2 inches on your bust line Built-up 2 ply back for back smoothing and comfort Comfort U back design Style number 3438