Why choose our runner belt? It has a large pocket to safely store necessities during exercise. Made of super soft, skin friendly fabric, close fitting design. Reduce uncomfortable bouncing or abrasions when running. Waterproof fabric keeps your phone dry in a lot of sweat or light rain. Slim, scalable design The weight is only 50g. It's very light. You can exercise effortlessly. The width of the running belt in its natural state is only 2 inches. When you insert your mobile phone or personal items into a convenient pocket, the seat belt can be extended to 4.5 inches to accommodate all items you may need. Smooth zipper Long lasting smooth zipper for easy removal. Don't worry about your things falling on the ground! Adjustable belt and quick release buckle It is made of high-quality elastic band, which can be adjusted from 27 inches to 44 inches. It is suitable for men and women. The quick release design allows you to immediately close the belt and start running. It is very suitable for running, fitness, exercise, cycling, walking dogs.