Chilled for 4 hours.

Our Hydration Packs offer the revolutionary insulation you expect from Hydro Flask, with our Cold Flow system that keeps water cold for over four hours. The insulated reservoir and neoprene sleeve with reflective lining maintain cold water temperature, while the articulated back panel lets air flow between you and your pack to prevent body heat transfer. Our Insulated Hydration Packs are the perfect solution to stay cool on your favorite ride, with enough capacity for trail essentials. Stay refreshed and enjoy the ride.

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