1. Material: High quality nylon. It's waterproof, but not completely waterproof. Keep your items dry in the rain. 2. Lightweight: The lighter you are, the better performance you can get from a variety of sports workouts. External headphone/data cable port for easy connection and enjoy music while running. 3. ADJUSTABLE AND FLEXIBLE: Its adjustable length makes it suitable not only for running, cycling and jogging, but also for camping, hiking, traveling, boating, and more. Perfect for all workouts, sports and running errands. 4. Trendy style for music festivals, theme parks, workouts, dog walking, hiking, travel, parties, cycling, Christmas gifts and running around town 5. CONVENIENT: 4 pockets (front, main and small back) keep your most-needed items by your side while exercising or running errands. In your busy lifestyle, it's important to have quick access to all the essentials. Free your hands, promote exercise and improve athletic performance.