Material:
The material is very thin and unfortunately only water-repellent and not waterproof. As just described, the material is not to expose greater burden. The Kurdel for closing does a good service and close the bag almost perfectly. The processing itself is however, as very good as well to. However Tatonka seems often to have smaller material problems because I have problems with holes in both my travel backpacks of this same brand.
Conclusion:
Due to the short shelf life and low capacity I can only give three stars and recommend the round bag when it is not exposed to large external or internal loads. For the price I would have something more tensile strength and stability expected. OAE for keeping a sleeping bag. to use anyway.