Ideal for fitness and regular training the flyleback style aids movement and flexibility. Endurance fabric is 100% chlorine-resistant, quick drying and engineered to last longer. 20 times more fade resistant than conventional swimwear. Comfortable, snag-resistant fabric. Four-way stretch technology for added softness. Thanks to its thin straps and flyback style, the Tiun muscleback swimsuits allow you to train in comfort without feeling restricted.