Exclusive LED light design: 2In1 waist pack and flashlight, high-brightness rechargeable LED lights make your night run safer. Elastic waistband: High elastic elastic waistband, comfortable and not tight, not loose and not easy to fall off, suitable for 27-44 inches waist, the whole family likes it.Waterproof and Sweatproof: The waterproof fabric protects the phone in the fanny pack from sweat or rain, but I don't recommend using it in swimming or water parks. Wired Headphone Jack: Even if you use wired headphones, you can enjoy great music while running or study sessions. There is also a reflective strip on the front of the fanny pack for safe operation even without LED light power.