ABS

The Adjustable Back System is the back system used in the largest backpacks from our range (55L and above). This system allows the back length to be adjusted within a range of approximately 10 cm.

The system consists of a strap ladder on the back of the backpack, to which a movable section with shoulder straps is attached using Velcro straps. The final back length is determined by which segment of the ladder is used for attachment.