Woohoo! The Kwans are back with a special!
This is a “traditional” Chinese jade bangle where you have to slip it on to your wrist – and then it’s not coming off for a while
Technically, if you get it in the right size, you’ll have to slip it on by greasing your hand/wrist with oil, butter, etc.
Here is an image that I found online (not this Kwan bangle) to illustrate what I mean in terms of fit –

The Kwans also offer a contemporary versions (here) with an opening/clasp so that you can easily take it on/off