Lightweight and durable the camelbak ultra 10 hydration running vest has been designed to withstand extreme conditions of one of the toughest trail races the ultra trail du mont blanc it comes with bpa free crux reservoir with a capacity of 2 litres an ergonomic handle for easy refilling and quicklink system the reservoir guarantees 20 more water per sip while 3d ventilated mesh back panel ensures a multi directional air flow and a cool feel when on the move the vest is made to hold ever