Bali Women's Passion for Comfort Wirefree Bra 100% Nylon bras closure Strap Lining: 100% Cotton. Outer Strap Lining: 100% Polyester. Inner Strap, Center Belt Lining: 100% Nylon. Cup Lining: 94% Polyester, 6% Spandex. Cup, Back, Strap Center Belt: 76% Nylon, 24% Spandex. Exclusive of Trim and Elastics. Tagless bra with lightly padded straps Seamless cups provide comfortable smooth look under clothes Imported Hand wash, line dry