I have weighed the fully laden backpack while not, however, are not unrealistic 15kg indication. Despite this weight, the backpack was "pleasant" to wear relatively. While I was sweating on the back, but pressed has nothing. Only the rust, which has been pressed by the cans could be felt all the way down. However, this is in my view not a problem of the pack, but the pack technique!
The backpack has thereby made a very strong impression!
Even for everyday wear the backpack is really handy because it depending on how much is in there, unobtrusive and does not affect exaggerated.
For me, a great backpack that meets all my requirements, is suitable for many different situations and hopefully long lifts.
Strong buy recommendation!