With our revolutionary new power flex eco fabric, eco-friendly is now performance-enhancing. Made with 78 percent econyl, a nylon fiber made of 100 percent post consumer nylon yarn waste, power flex eco retains its shape up to 10X longer than traditional swimwear fabrics. It's resistant to chlorine, sagging, and bagging. It also offers 4X the compression of standard fabrics and is twice as strong. Power flex eco - good for the environment, even better for swimmers.