Speedo Burst PowerFLEX Eco Drop Back Female Navy/Red/White 30 -PowerFLEX Eco fabric, good for the environment, even better for swimmers. -Made from 100% post-consumer waste nylon yard. -3X more compressive than PowerFLEX fabric. -30% more resistance to fiber breakage in chlorine compared to PowerFLEX. -Teardrop shape back features wide straps for serious support.