ONETOALL Running Vest for Women & Men, Lightweight 150g Hydration Backpack, 5.5L Pack for Trail Running, Marathon, Hiking, Cycling, Jogging, Adjustable Fit

WEIGHING ONLY 150G: ONETOALL running vest is made of the lightweight fabric, weighing only 150g (5.29oz), and can hold 2 liters water in the main compartment

FULLY DETACHABLE AND ADJUSTABLE CHEST STRAP: The detachable chest strap will not slide and is more securely fixed. You can safely embark on an adventure with hydration vest on your back

COMFORTABLE ERGONOMIC DESIGN: Running hydration vest can deeply fit your back while reducing pressure on your shoulders and back. Even when you are running at high speed, the running water vest can stably fit your body and avoid shaking

ULTRA LIGHTWEIGHT UPGRADED FABRIC: ONETOALL hydration vest is made of the new knitted fabric and upgraded mesh fabric. And provide excellent breathability to keep your back cool and sweat free during exercise

MULTI FUNCTIONAL STORAGE: Our running vest have a individual bladder warehouse for your 2L BPA-free bladder, and a main warehouse for your clothes and towel. In addition, also has elastic pockets and zipper pockets on the front shoulder

REFLECTIVE DESIGN: Logo and webbing with reflective design on hydration vest enhances visibility during nighttime activities, you can rest assured to engage in safe activities at night

APPLICABLE SIZE: Our running hydration vest is suitable for chest circumference: 27.56 "-62.99", suitable for weight: 88.18lb-330.69lb

LEAK PROOF WATER BLADDER: The Water Bladder has a high flow self-locking function to prevent leakage. Quick disassembly design for water pipes is more convenient and BPA Free and odorless Pressure resistant and durable

VERSATILE FOR VARIOUS ACTIVITIES: ONETOALL hiking backpack is designed for running, cycling, marathon running, and hiking enthusiasts

1 MILLION SHAKING TESTS: Our running vest was designed by marathon runners and underwent 1 million shaking tests, equivalent to an adult running 1 million meters (24 full marathons)