Designed for ultra-marathons and fast-paced adventures where speed is the name of the game, the BLACK DIAMOND DISTANCE 4 HYDRATION VEST is a low-profile hydration backpack designed specifically for trail riding.

Featuring Edge Taping technology that allows for a seamless, fully heat-sealed edge for superior comfort, ease of movement, and weight reduction, this backpack has an ergonomic sleeveless vest design that does not restrict movement. This harness system is made with stretchy side panels, providing a more secure fit while running. In addition, a Z-Pole carrying system has been added to the shoulder for easy access during the run, while two water bottle holders hold two HydraPak SoftFlask comics to keep you hydrated throughout the run.

Zipped chest pockets (one with a key hook), a lumbar pocket, two main back pockets and small storage pockets have been added to carry the essentials.