CamelBak Volt 13 LR 100oz Hydration Pack. The CamelBak Volt 13 LR 100oz Hydration Pack provides a lightweight, well organized means to carry plenty of water and gear for your all day adventure rides, all the while improving comfort and pack stability via the Lumbar Reservoir LR design. The Volt 13 LR features the 100oz Antidote Lumbar Reservoir which places the reservoir at the bottom of the pack over your lumbar region for enhanced stability and off road comfort. This keeps the pack from riding up as well as prevents sloshing of water or wobbling on big drops. The 100oz reservoir capacity ensures you're hydrated for 3 hours out on the trail while the 600 cubic inches of gear space offers room for all the nutrition, tools, electronic devices, and extra clothing needed for extended off road endeavors. Its highly ventilated LV back panel and Ultra Lite 3D Mesh Independent Suspension harness ensure superb comfort and ventilation while the pack's ultra light materials mean you remain nimble and agile out on the trails.