Review (2/5): Weak and complicated
I couldn't get these to work on my hair, and the struggle just ended with cheap plastic tangled all in my hair. The clips are pretty weak, both the one on bottom and the smaller ones on top, and didn't hold my hair. They feel pretty cheap.
The method also seems pretty straight forward in theory, but more challenging in practice. Figuring out what hair to lift and where to place the clip underneath took some practice, and then the clip kept sliding while I was trying to put the twists in place.
Needless to say, it looked nothing like the pictures. These may just be better suited to thick hair - mine is fine and straight.
I definitely wouldn't get these again.