Good support - Good price

The assembly and disassembly of the head restraints is easy and done quickly.
The processing of the bracket is good and if you tighten the lock well, moves as well as anything. That the holder sometimes wobbles slightly, the road surface, the speed and other condition of the vehicle (suspension, tight fit) is due, and thus has nothing to do with the actual mounting.
Others can do, mounts directly to relating the manufacturer, no better.

The children are happy on long journeys and that's the main thing.
For the price, a clear buy recommendation!