• 5L STORAGE CAPACITY: Hydration backpack 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
• 0.5 LB ONLY with TUBE BUCKLE: UTOBEST hydration pack is incredibly light, nearly weightless, you don’t even notice there is a running water vest on your back. Tube buckle design secures your water tube, ensuring stability and focus during movement
• BREATHABLE and SWEATPROOF: Experience ultimate comfort with this running pack, made from breathable, sweatproof mesh and nylon. The water backpack features high-quality nylon fabric, YKK zipper, and Duraflex fastener, ensuring stability and durability
• ERGONOMIC ADJUSTABLE FIT: UTOBEST running vest hydration adjustable strap design for easy adjustment and outstanding stability, reduces bounce and ensures a great fit while running. The runners vest suits for chest size 31.5-47.3 inch
• FITS 1.5 L Hydration Bladder (not included): Compatible with 1.5 L bladder, supports 1-2 hour trips. Hydration backpack for hiking features a separate bladder compartment, hanging system, and front flask pockets for easy hydration and balance on the run