Reflective strips: The running fanny pack with hydration bag is designed with adjustable carabiners and night reflective strips to make night running safer.LARGE CAPACITY: The running fanny pack has a larger zippered compartment for your phone, keys, MP3 and other multi-purpose storage areas.45 Degree Angled - Running fanny pack features a smooth slider zipper and clip for easy access to items. 45 degree angle for a perfect fit.Rear Ventilation Hole: The running fanny pack with hydration bag is designed with a rear ventilating hole, which is breathable and not stuffy. Non-slip and wear-resistant.Headphone Jack: The Flowing Waistpack is very comfortable and lightweight. The headphone jack in the front pocket makes it easy to enjoy music.