Felina Women's Essentials Seamless Hidden-Wire Bustier 87% Nylon, 13% Spandex Imported Hook and Eye closure Hand Wash This seamless push-up long line bustier is perfect under your sleekest clothing. Hidden underwire construction for a smooth, clean and seamless appeal Patented design,10 row, 4 column hook and eye closure in the back. Side flexible boning assures stability of garment. Silicone facing elastic to ensure fit Low back for specialty garment needs,10 row, 4 column hook and eye closure in the back.