Body: 90% Nylon, 10% Elastane; Lining: 80% Nylon, 20% Elastane Elastic 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. Phone Pocket: The built-in liner with a elastic phone pocket on the right can hold plus phone properly, free your hands when workout. Back Zipper Pocket: Back pocket with zipper allows you to use them for any activities without fear of the keys or cards in your pocket falling out. Elastic Waistband: Wide and Soft elastic waistband fits comfortably without falling down, perfect for running, workout, exercise, gym, fitness, jogging.