Engineered for ultra-marathons and fast-paced adventures where speed is the name of the game, the Distance 4 Hydration Vest blends our pack suspension technology with premium materials for a tour-de-force on the trails. Featuring our Stitch-less Edge Taping Technology for superior comfort, movement, and weight reduction, the Distance 4 Hydration Vest is equipped with an innovative over the shoulder Z-Pole carry system that can be easily accessed while on the go.The harness system is constructed with side stretch panels, which gives you a more secure ride while running. Dual flask pockets fit two BD HydraPak SoftFlasks which are included with the vest, while zippered chest pockets, lumbar pocket, two main back pockets and small stash pockets provide ample storage for essential supplies.