High Quality Materials: Made of high-quality materials, light and durable, waterproof and sweatproof, soft and breathable, so that your valuables are protected from sweat or rain.Comfortable Adjustable Belt: The Waterproof Bumbags with adjustable length can be stretched up to 120cm, which fits most people's waist circumference and will not make you feel uncomfortable or burden your body.Reflective Strip:The Waterproof Bumbags has a reflective strip, so you will be noticed by other vehicles when you run at night, ensuring the safety of running at night.Unique Design: The thoughtful headphone jack design allows you to exercise while listening to songs, making exercise more interestingWide Application: Our running belts are very suitable for fitness, walking, jogging, cycling, mountain climbing, gym exercise, picnics, traveling and outdoor activities.