1. Running Hydration Vest: Designed for breathability and comfort, this vest helps regulate body temperature and wicks away moisture to keep runners dry during long workouts. The rear storage compartment holds up to 1L water bottles, ensuring constant hydration without affecting your pace. Staying hydrated and energized enhances your running experience, ensuring safety and comfort. 2. Multiple Pockets Reflective Design: The front features a zippered storage bag (fits up to a 7.5inch phone) and a builtin card slot for bank cards, cash, etc. Two small pockets on the shoulder straps store energy supplies and sunglasses for easy access. Reflective strips on the front and back enhance safety in low visibility. 3. Quality: Made of quality breathable mesh, this lightweight vest minimizes resistance for comfort and portability. The soft, breathable mesh on the back and shoulder straps accelerates airflow, wicks moisture, prevents heat buildup, reduces running stress, and keeps your shoulders and back cool— for outdoor sports. 4. Adjustable Chest Strap Design: The vest features an elastic, adjustable chest strap (range: 25.6–51.1 inches) for a secure, comfortable fit while running. It minimizes bouncing and shifting, prevents abrasions from poor fit, and improves running comfort and experience.