UTOBEST Running Vest Backpacks Lightweight Functional Hydration Pack 5L, with 1.5L Bladder

5L STORAGE CAPACITY: UTOBEST running vest with multi-pocket design, separate bladder compartment, two front flask pockets with loops, a zipper pocket for phone, and various pockets for keys, coins, and more. The backpack fits different running distances MAXIMUM COMFORT: The hydration running vest is adopt to premium nylon and polyester fabric, which is stretchy, sweaty and breathable. Extremely light backpack, only 250 g, you don’t even notice there is a hydration running pack on your back FLEXIBLE SIZING: Adjustable strap design for easy adjustment and outstanding stability, reduces bounce and ensures a great fit while running. The hydration pack suits for chest size 31.5-47.3 inch DURABLE & SAFE: The reflective strip design and rescue whistle enhance safety for marathons, trail running in dark conditions. The YKK zipper and Duraflex fastener accessories make hydration vest have a long-lasting service life QUALITY ASSURANCE: UTOBEST is committed to providing outdoor enthusiasts with the safest and highest-quality running gear. This 5L running vest meets all your needs for carrying essentials