Double Layer Design: The inner layer provides elastic support and protective coverage; Outer layer side split design provides breathability and a greater range of motion. Back Zipper Pocket: Back zippered pocket securely stash valuable items like a key and credit card, keep your hands free during activities. The built-in lining with a elastic pocket on the right that can be used to store the phone. Phone Pocket: The built-in liner with a elastic phone pocket on the right can prevent your phone out slipping, keep free movement. Lightweight and Breathable Fabric: Super soft material wicks away sweat to keep you comfortable when you exercise.Offers a smooth, low-friction performance. Wide Flat Elastic Waistband: Wide and soft elastic waistband with internal draw strings for a personalized fit, keeps you feeling comfortable with no rolls or digs. Perfect for: Running, jogging, yoga, workout, fitness, exercise, pilates, gym, and other training activities.