not dense and unstable

This bag is, like everything I had been of East Pack, not waterproof.
In the backpacks, which I had previously, this was also the case. Overall, the case is quite limp constructed. At least a solid ground I would have liked. I find the products by Deuter now better and will Eastpack no longer buy. What good is the alleged lifetime warranty, if such a part generally identifies significant disadvantages in the use?