Elegance by Glamorise Seamless Wire Free nylon Hook & Eye closure Hand wash, warm, line dry, do not bleach. 55% Polyester, 35% Nylon, 5% Cotton, 5% Spandex. Wire-Free! Lace-accented seamless molded satin cups. Padded straps for all-day comfort. Inner cup slings provide lift and shaping. Back and side panels manage moisture.