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

FABRICS: Nylon, elastic power mesh, YKK zipper; capacity: 5L; size: 44*20cm/17.3*7.9inch; pocket: 1 main compartment, 2 water bottle pockets, 3 small pockets ULTRALIGHT BACKPACK: Ultra-light stretch fabrics, only 250g, help you go further and higher every time BREATHABLE&COMFORTABLE: Made with high-density mesh, the fabric breathes and evacuates moisture. Ergonomic design, adjustable belt, fit body perfectly, more comfortable HYDRATION SYSTEM: Bladder compartment with hanging system, compatible with 1.5L hydration bladder (hydration bladder is not included) SECURITY: Front and back reflective strip design, safe for running riding in dark conditions