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Engineered for serious mountain bikers and gravel riders, the Zefal Z Hydro Race delivers performance-focused hydration in a stripped-back package. The integrated 1.5L reservoir features a generously sized opening for quick refills and thorough cleaning, while its silicone delivery tube supports extended riding sessions up to two hours. A strategically positioned external pocket secures your essentials without compromising weight distribution. Advanced 3D mesh ventilation across the back panel and shoulder straps manages moisture and heat, while the fully adjustable harness system accommodates various physiques and maintains rock-solid stability across technical terrain. Built for riders who demand reliability without excess.