M.U.LE PRO 14 3L Unisex pack with all new Air Support Back Panel, plus a few essential additions to take your hike to the next level. Designed with body mapping technology to address areas that retain the most heat, maximum air flows across the back panel to provide comfortable cooling. A lightweight and breathable 3D vent mesh harness helps to keep your load light. A large capacity 3-liter Crux Reservoir and a hip belt with cargo carry.