Made with durable and sustainable materials, CamelBak M.U.L.E. 100oz Hydration Pack is ready for any demanding trail. Offering 12 liters of storage, the M.U.L.E. features several external pockets, a helmet and armor carry and a 3-liter CRUX reservoir. Thanks to the Air Director back panel and breathable ventilated harness, you don't overheat in mid-ride. The M.U.L.E.'s adjustable sternum strap and removable stability strap give you a great fit and a balanced load. With its external reflective detailing, you're visible to motorists when riding at night.