This backless jumpsuit is made of high-quality nylon ammonia fabric, lightweight, comfortable, and breathable, keeping you dry and comfortable during exercise. The U-shape neckline design highlights the line of the collarbone, showing charming curves. The double straps undershirt design provides good support and makes you more confident and comfortable during exercise. A tight waist design can trim the waistline and show the perfect body proportion. Whether you are in yoga, running, or fitness training, this jumpsuit is ideal for you.