The Camelbak Hydrobak features a minimalist design providing a perfect opportunity to try out a back mounted hydration system from the market leader. As popular with runners as it is with cyclists thanks to its short profile. Features reservoir access through the front of the pack, breathable back panel, zipped pocket for essentials & front & rear reflectivity. Weight exc.reservoir: 160 g. Hydration: 1.5 Litres Total capacity: essentials only.