Playtex Nursing Underwire Bra, 42C-White bras closure Wrapped underwires gently cushion skin. Inner cup sling helps the fit adjust to your changing body. Lay flat nursing clasps for easy one-handed nursing access Two-ply cups with wicking fabric keeps moisture away from skin. Fiber Content: "Molded Cup loose Lining: 100% Polyester; Back, Under Cup Sling: 82% Nylon, 18% Spandex; Center belt: 100% Nylon"