"Amphipod® PureRun Essential Hydration Vest: The Amphipod® PureRun Essential Hydration Vest is a lightweight hydration vest built for runners who need reliable fluid access during training runs and longer road efforts without carrying unnecessary weight. The ultralight, fully breathable construction keeps airflow moving against your body, so heat and moisture don't build up during sustained efforts. A Bounce-Free Lateral Stabilization System™ keeps the vest stable as mileage accumulates, so the load stays put rather than shifting with each stride. The overall character is minimal and functional - suited to runners who want hydration support that stays out of the way.The vest includes a premium 1.5L Soft-Tech™ Reservoir with a high-flow bite-valve, delivering consistent fluid access without breaking stride. A 3D Honeycomb™ Mesh inner creates an open footprint that enhances airflow between the vest and your back. Cinch-Fit® vest construction allows a custom, secure fit across a range of body types, and the fully adjustable one-size-fits-most design removes the guesswork from sizing. Versatile front expandable storage compartments handle gels, a phone, and nutrition essentials, while an optimized rear compartment with a secure zipper pocket adds organized capacity for longer efforts.Why Our Fit Experts Love It""I wore the PureRun Essential on a warm Saturday long run and was impressed by how little I noticed it was there. The Lateral Stabilization System™ kept everything locked in place, and the front pockets made grabbing gels mid-run completely effortless."" - Sean, Road Runner Sports Fit Expert, Chula Vista CAWho It's Best ForThe Amphipod® PureRun Essential Hydration Vest is best for runners who need lightweight, bounce-free hydration support for training runs, long runs, and road running. It works well for athletes who prefer minimal carry with enough storage for nutrition, a phone, and essentials without adding bulk. The one-size-fits-most Cinch-Fit® construction makes it a practical option for a wide range of runners looking for a reliable hydration pack. VIP Family members can take the PureRun Essential Hydration Vest for a 90-Day test drive with our Perfect Fit Guarantee."