The material is good, but when you put it in the middle somewhere, it breaks... the strap spins around and doesn't stay well on you, while the case moves, making it difficult to easily find the zipper when you want to take something out from inside

Depending on the use you want, the evaluation also goes. The materials it is made of are relatively good EXCEPT for the strap! It is a loose elastic material which is not at all convenient because if more weight is put on it, the bag starts to fall, the strap stretches and it falls. In the past, I had bought from the same company and I was very satisfied with the quality of the materials (the strap was stable like the one they put on bags, adjustable and very practical), now unfortunately I put it aside and I am looking for another one.
This bag has the good thing that it is small and does not protrude. Cards, mobile phones, keys, etc. can be put inside (it just can't withstand weight)