It can hold small items such as mobile phones and is also equipped with a headphone jack. PREMIUM QUALITY SOLID ZIPPERS: Zippers are a very important part of a bag and should never be compromised. This waist bag uses a tough zipper, which is strong, easy to slide, and works smoothly, so you don't have to worry about the embarrassment of stuck teeth. The belt is equipped with an adjustable buckle, which can be freely adjusted for tightness. It can be worn around the waist or across the chest to release your hands, making it a good supplement for your daily errands and outdoor activities. It is very suitable for walking, running, and cycling. Biking, hiking, tours, festivals, fairs, concerts and farmers markets etc.