HighlightsDesigned with polyester mesh fabric, our running backpack provides excellent air circulationCome with different sizes water bladders, retain liquids without any leakageEquipped with multiple storage pockets, store your outdoor necessities, like keys, wallet, sunscreenWe design unique reflective trim to attract driver's attentionThis lightweight running backpack has adjustable straps in waist and chestSpecificationCapacity - 5LDetails*Features* - *Comfortable Wearing Hydration Vest* - D