This "contraption" is certainly not worth about thirty dollars
The material its made out of looks like its made out of the wire from the binding of a notebook.
Also it is not really made for small wrists, such as in the picture shown.
The position its in on the picture is where they have adjusted it to lay flat but if it was shown with the person was raising their hand youd see that it would slid off to the side.

The only way for it to make it stay in one place is if you either had a fat wrist or if you tightened it. I tried adjusting it tighter and the clasp broke.

I haven't even had it for an hour

Very disappointed and its grossly over priced for such a cheap looking product