1. Comfortable and breathable system: The back of the jogging vest is made of breathable mesh fabric, which keeps you cool and comfortable, prevents you from overheating, and makes you feel refreshed during running. 2. Reflective safety strip: The hydration jogging vest is designed with front and rear reflective strips to improve visibility and safety during running at night or in low light conditions. 3. Lightweight design: This vest weighs only 196 grams, lighter than smartphones, reducing weight and allowing you to focus on your performance without adding extra weight. 4. Multiple storage bags: The backpack is equipped with multiple storage compartments for easy and organized packing, making it easy to access essentials and storage during running. Backpack specifications Main materials: Nylon Color: Black Net weight: approximately 196g