After a while of use, the strap has started to not tighten as well to the size I desire. However, the piece that you place in the phone case seems quite durable, and even though I use it often, it has no wear. I had used a plastic one at first, and it broke quite quickly.

Much better than getting a case with a cord. You can use any case you want, remove the cord whenever you want and stay only with the case. Good quality fabric that goes inside the case. Highly recommended
(Used for about 4 months so far)