10 days I was in the Stubai Alps on the road. The backpack has not been proven. On the first Ascension Day tore a strap. The backpack was no longer usable under load. I dragged with in as excess baggage. In the hut I sewed by hand the belt. It revealed itself in the field of Velcro harnesses more defects. Three days later, the upholstery of the risers split open by the rubbing against the clothing and by the movement - sew again on a cabin by hand. Finally tore another strap and the elastic band exterior also ripped!
So a product can not use in mountaineering. I can only advise against any of this backpack. In an exchange I will refrain, because that means more effort and the product is patched by me several times. Also, I was annoyed enough about this product. It pays to actually take more money into the hands and buy a backpack from Deuter or Vaude.