Playtex Secrets Women's Signature Uplift Underwire Bra 100% Nylon bras closure center belt lining and inner strap: 100% nylon; outer cups and cup pad lining: 100% polyester; back: 64% polyester, 36% spandex; outer strap and center belt: 69% polyester, 31% nylon Seamless cups provide a smooth look under clothes Signature Shaping underwires provide added shaping and support. Imported Hand wash, line dry