85% Nylon, 15% Spandex Drawstring closure Breathable & Soft Fabric: Lightweight and breathable soft material wicks away sweat to keep you cool and comfortable when you exercise. Double Layer Design: Inner layer provide elastic support and protective coverage; Outer layer side split design offer breathability and wider range of motion. Hidden Pockets: The built-in liner with a elastic phone pocket on the two side can hold plus phone properly, free your hands when workout. Waistband: Wide and Soft elastic waistband with drawstring fits comfortably without falling down. Occasion: Perfect for running, workout, exercise, gym, fitness, jogging.