Designed for mountain missions at a fast clip, the Distance 4 Hydration Vest from Black Diamond combines our running harness suspension with the best-in-class materials found in our Distance Pack to create the ultimate running vest.\n\nBD SET (Stitchless Edge Taping) Technology for a comfortable fit4-way Stretch Vapor Mesh for breathability and comfortRemovable OTF (On The Fly) Z-pole storage for on the move accessDedicated Race ready back pocket with expandable storageBDDry™ protected device pocket with expandable storage and locking zipperKey Leash Securities pocket for valuables, with expandable storage and locking zipper.Dedicated bladder sleeveDual sternum strapsDual locking zip chest pocketsIncludes two 500ml Soft Flask Black Diamond Men's Distance 4 Hydration Vest Ultra Blue | Buy Black Diamond Men's Distance 4 Hydration Vest Ultra Blue here | Outnorth