The front part of the backpack is equipped with a MOLLE system (6 rows) to be able to add additional pockets.
In the lower part 2 arranged eyelets for ice axes and in the upper part of the bag there are 4 passing rings for additional material (sleeping bag etc.).
The back is in mesh, padded and shaped for good ventilation; it's also adjustable in height to better fir different sizes. The shoulder and lumbar straps are adjustable and stabilizable by special belts.