Comfort good - quality is poor

I bought this backpack for the GR 20 in Corsica.
Packed with about 15 to 18 kg, the backpack was set well and the comfort
was okay - the load was distributed well.
At the beginning stood in the strap mounting a steady squeaking one, which does not
remedy was - this then disappeared after 5 days per a 7 to 9 hours. Experiments with talcum etc were all
unsuccessful.
Further, the material is not very stress-resistant - the pockets for drinks are very sensitive and
be frayed very quickly from contact between rock. The seams of the lid pocket went on for about 7 days and the padding on the lap belt has begun to dissolve.
The product I would not buy, because it wears out too fast - my old rucksack from one
Brand manufacturers, I have now 22 Years - Damage of this kind I have never found.
It's worth it just to spend 100 more - lasting joy is that no one has.