Playtex Women's 18 Hour Back Smoother with Comfort Strap Full Coverage Bra #4E77 43% Polyester/40% nylon/13% spandex/4% cotton; exclusive of trim and elastic Imported Hook and Eye closure Machine Wash Lay-flat shine alligator trim; modern, versatile neckline Built up back wings for back smoothing Comfort strap design helps prevent dig-in Wire-free design Added side support creates allover smoothing effect