Key features

• •Ultra-light For Running:5L race vest is super light, the backpack weight only 120g/4.23 oz , reducing much of the load during the running. When it comes to running, the shorter you plan to spend on the trail, the lighter pack you'll need. Design for middle or long-distance running.
• •Comfortable and Breathable: Soft and honeycomb breathable mesh net of hydration vest for optimal comfort and absorb sweat efficiently. The flexible adjustable straps help the race vest hug your body nicely. Perfect fit, keeping the pack from bouncing while running.
• •Hydration System: Aonijie running vest compatible with 1.5L bladder (not included). Bite and Pull valve, quick release leakproof bladder connector. Water can be taken it out easily when running. Convenient trail running backpack outfit.
• •Multiple Storage Compartment: Designed with 7 storages, you can store all tiny items such as vacuum kettles, energy supply, bladder, 6.8 in phone and cash key, etc. These pockets also allow you to get the things directly, extremely convenient
• •Fit You Well: Ergonomic designed vest-shaped bag coming with adjustable waist strap and high elastic chest strap, two sizes for your option. This backpack can be used for more than running and hiking.It is suitable for almost all outdoor activities such as running, riding, camping, marathon, etc.