Speedo Women's PowerFLEX Eco Strappy Tankini Swimsuit 78% Nylon, 22% Spandex Imported Power flex eco is 100 percent regenerated nylon from pre and post-consumer waste and is 30 percent more resistant to fiber breakage than ordinary swimwear Retains its shape up to 10x longer than traditional swimwear fabrics and offers 4x more compression than standard fabrics and is twice as strong Removable soft cups for modesty and support Built-in underwire bra Thin back straps for free range of motion