SPANX 2634 High-waisted Swim Bottom in Black Shell: 70% Nylon. 30% LYCRA XTRA LIFE Elastane. Front Lining: 91% Polyester Shell: 70% Nylon. 30% LYCRA XTRA LIFE Elastane. Front Lining: 91% Polyester Bond-voyage flexible shaping technology targets tummy. Conforms to body holds its shape and yours! Sunscreen and chlorine-resistant for long-lasting wear. UPF 50+ To keep your suit looking smashing, please keep this in mind while you're splashing: Avoid chemical products, sun tan oils and harsh detergents.