NIKE SWIM Galactic Opera Female Fast Back TankThe Nike Galactic Opera Fast Back Tank Swimsuit for women features a conservative back, high neckline, and wide straps for great support and superior performance. The more streamlined shape is designed for less drag. This Nike Fast Back Tank is designed to accelerate your training!NIKE NX: No matter how tough the competition, a swimsuit made with Nike NX is even tougher. Harsh, chlorinated water is hard on swimwear fabric, so Nike Swim Competitive Team designers set out to create a chlorine-resistant nylon fabric that could withstand long seasons of training and competitive team racing. The result is NIKE NX for swim team competitions: an incredibly durable, colorfast fabric that retains its shape through the life of the garment. Rigorous testing included the equivalent of 500 hours in colorfast testing in everything from pool water to sea water. That means no matter how tough the competition, a competitive suit made with NIKE NX is even tougher.