Main Functions：

1. Lightweight & breathable fabric reduces sweating and burden during long runs, marathons and hikes.

2. Water-resistant material protects personal items from light rain and sweat.

3. Ergonomic vest structure fits closely without bouncing, ideal for running, cycling and trail activities.

4. Universal size design suitable for both men and women, with adjustable straps for a personalized fit.

Whether you’re tackling a marathon, exploring mountain trails, or going for a casual cycle, this running vest backpack combines functionality and comfort, letting you focus on your sport without distractions.