Waterproof zipper closure: The running vest features a waterproof zipper closure that is smooth and easy to open and close. This provides convenient access to belongings and prevents items from falling out during movement. It also protects your items from getting wet in rainy weather, adding practicality to the bag. Lightweight and versatile: This chest bag is lightweight and does not burden you during outdoor activities. It is suitable for a variety of outdoor sports and scenarios, including marathons, running, horseback riding, hiking, camping, and mountain climbing. Adjustable size and comfortable fit: With dimensions of about 38 x 30 x 3 cm / 14.96 x 11.81 x 1.18 inch, this running bag is designed to accommodate various body sizes. It features adjustable shoulder straps and a rotating waist buckle, providing a comfortable fit for different individuals. Large capacity: This chest bag is designed with multiple pockets, including two large main compartments and a back mesh pocket. It also comes with two hooks, allowing you to store and organize small items such as your phone and water bottle, making outdoor activities more convenient. Use scenarios: Marathons and training runs to keep essentials secure and accessible. Hiking and camping trips to carry gear without bulk. Horseback riding and mountain climbing where items stay dry and secured.