90% nylon 10% spandex. Stretch fit. Back bow detail. BEYR-WM399. SP8119KS. Beyond Yoga is ideal for modern living, from carpool to class, and lounging to lunch. Built on the belief that confidence is not a size but a state of mind, Beyond Yoga meticulously designs and tests each piece to ensure optimal comfort and functionality. Beyond Yoga is designed to fit a variety of body types, shapes and sizes without compromising comfort, support and style.