This running belt bag is crafted from skin-friendly Lycra and polyester fabric materials that are soft, breathable, moisture-wicking, and sweat-proof for comfortable wear during any activity. The slim design measures just 0.06 inches thick and weighs only 0.16 pounds, making it lightweight enough to carry without adding noticeable bulk to your waist. The multi-functional pocket keeps your phone (up to 6 inches), keys, and other essentials organized separately to prevent friction, while a convenient earphone hole allows you to enjoy music hands-free. The fully elastic waistband adjusts from 27 to 38 inches to provide a snug, bounce-free fit for a wide range of body types, and the durable buckle closure ensures the belt stays securely in place during sports and outdoor activities. A reflective strip surrounds the zipper to enhance visibility and safety during low-light conditions by alerting pedestrians and drivers to your presence. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm under Proposition 65. The belt bag is available in multiple color options and provides a practical, comfortable solution for carrying essentials while running, hiking, cycling, or engaging in other active pursuits.