Designed for runners, hikers, and cyclists, this lightweight running vest combines hands-free hydration, secure storage, and all-day comfort, making it ideal for outdoor adventures. The vest features a dedicated side pocket for a 500ml soft water bottle, allowing you to easily hydrate during marathons, trail runs, or long hikes without slowing you down. The breathable mesh back wicks away sweat and maximizes airflow, preventing overheating even during high-intensity, long-distance workouts. Adjustable elastic compression straps and fully adjustable shoulder straps provide a customized fit, ensuring the vest stays secure and stable during exercise, preventing shifting and discomfort. Multiple expandable pockets and zippered compartments neatly organize your smartphone, energy gels, keys, cards, and other small essentials, keeping all your gear easily accessible during your workout. High visibility reflective detailing enhances your visibility to vehicles and pedestrians during early morning or nighttime runs, ensuring your safety. The ultra-lightweight and durable fabric ensures long-lasting performance without adding extra weight, making it ideal for marathon training, trail running, cycling, and any outdoor sports. Suitable for both men and women. Note: 1. Manual measurement, please allow some error. 2. Due to differences in light and screen, the color of this product may differ slightly from the image.