1. Holds smartphone, passport, credit card, cash or sports gel. Equipped with a special headphone jack to enjoy music while exercising. 2. Double layer composite design. The running fanny pack is made from ultra-light, skin-friendly, breathable and moisture-wicking Lycra material. The inner material is a Tpu waterproof finish to ensure your valuables are dry and safe in wet conditions. Perfect for running, jogging, gym workouts, walking, hiking, biking, shopping or traveling. 3. No bounce Soft elastic prevents chafing - wont bounce back during runs or strenuous activity. With fully adjustable elastic. The running waist bag also has 3M reflective strips, which is safe for night running. 4. Headphone output lets you listen to music while cycling, running, jogging and hiking. You can have a more enjoyable and relaxing exercise experience.