For the price range it is aimed at, it is the best.
The rubber bands that hold the headset are adjustable and it is all elastic, not "straps".
With the weight of the phone, it falls forward, but you can tighten it. Personally, I didn't tighten it enough because the price doesn't guarantee that the joints will withstand the pressure.
Otherwise, in terms of functionality, the adjustment it has for the lenses is more than enough and exactly where it is needed.
While other headsets only have adjustment for the distance between the eyes, this one also has adjustment for the distance of the lenses from each eye. And the difference compared to other headsets, as well as the usefulness of these adjustments, is "invaluable".

Additionally, if you remove the protective "pad" for scratches that it has for the back of the phone, cut it in half and place it on the right and left between the screen and the "frame" of the headset, the phone goes even further back and at least for my head shape, the result is crystal clear image.

It is used with a 6.2'' phone.
So, although it is for maximum 5.5'' phones, it definitely works well.
Although I notice that it is at the limit of the adjustment for the distance between the two eyes.
The so-called Interpupillary Distance.
However, it does not create any issue or problem.

Also, in the position of the nose, it does not have anything soft to rest on, and the plastic of the frame touches the nose. So I suggest that before using it, the owner should put a small cloth or something soft to rest on the nose, because if they leave it like that, the upper part of their nose will hurt for a week.

Otherwise, it is the best in this category.