I used this pack hiking through Peru for a week and it was the perfect size that I needed. The outside has multiple loops for high customization, and other Klättermusen products (like the stretch pocket) easily equip on and off. It is super comfortable to wear, and the hip belt adjusts to my exact hips with its 4 points of adjustment. The belt buckle itself is a nice metal lock that is smooth to lock and unlock, never realized that there were other options to fumbling with plastic buckles. The rolltop also means that if I really wanted to, this pack could easily become a 70-80L. I don't know how truly effective the carry-on bone system is, but there is definitely a different, more comfortable feel with this pack at full weight than other 60L's that I have used.

The one downside is that in order to access the bottom of the pack, you had to go through the top of the pack. However, this was not really a problem because I never really needed to get to the bottom of the pack unless I had already set up camp for the day.

If you are going mountaineering or backpacking, I highly recommend this for its comfort, durability, and high technicality. Plus, I'm expecting to pass this pack down to my children when I'm finished with it. From their website, it looks like they made this pack from recycled fishing nets too.