The updated CamelBak Circuit hydration vest is 30% lighter and includes a 1.5-liter Crux reservoir that delivers 20% more water per sip than the previous version of this popular running vest. Front pockets are compatible with CamelBak Quick Stow flasks (sold separately) that are lightweight, collapsible and feature one-piece silicone bite valves for rapid hydration
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A guide to keeping your body properly fueled and hydrated on your bike.
What you need for a road ride.