Most of the weight is therefore taken off the shoulders, reducing the chance of injury from shoulder strap pressure (many backpacks equipped solely with shoulder straps can affect the posture of a person carrying more than 14 kg (30 lbs)), as well as being less restrictive of the upper body range of motion.
Sebagian besar beban tidak tertuju pada bahu, mengurangi kemungkinan cedera dari tekanan tali bahu (banyak ransel dilengkapi semata-mata dengan tali bahu dapat memengaruhi sikap orang yang membawa lebih dari 14 kg (30 lbs)), serta membatasi jangkauan gerak tubuh bagian atas.