Aarn U Flow Balance Packs are the most efficient, comfortable, stable, practical and healthy way to carry load on the human body. They challenge traditional thinking on pack design.

Backpacks significantly disturb the posture, balance and movement of the body. Backpacks create leverages on the torso that act to distort the natural curve of the spine. Backpacks are a stressful and energy wasting way to carry a load.

Real breakthroughs in load carrying only come by basing the design process on the findings of Biomechanics and Ergonomics.

“For over 25 years I have been conducting international research on load carriage in military and leisure settings. This has involved a wide range of laboratory and field studies of many types of load carriage systems. Our research identified the principles of load

carriage. As far as I am aware Aarn Balance Packs are the first to really put the principles into practice.”

Professor Stephen Legg, Centre for Ergonomics, Occupational Safety and Health, Massey University, NZ

Stated very simply, a load carrying system should not disturb the natural posture and movement of the body. So the load must be dispersed onto the skeletal structure in a balanced way around the vertical axis so that the loading on the body is only vertically downwards. This creates naturally balanced and body friendly load carrying. Add our U Flow motion systems and body agility is not compromised. The result is that you flow naturally balanced under load.

Our load carrying systems can no longer be called backpacks. We call them U Flow Balance Packs.