The M.U.L.E. backpack is a legend. And the new Camelbak M.U.L.E. The PRO 14 is the same backpack you've known and used for years, but with lots of new features. The Air Support Pro back system and lightweight breathable materials allow for maximum ventilation. A dedicated pocket for an e-bike battery has been added, and the internal layout has been meticulously refined for enhanced organization. The M.U.L.E. PRO 14 is compatible with the Camelbak Impact Protector spine protector. The total capacity is 14l, of which 3l is occupied by the Crux reservoir. The women's version is designed to respect the female torso, and the straps are moulded into an “S”.