Can't imagine those headrest addons would stay on the car long....
They look good till they're stolen though.
You are absolutely right Nick, I've got them on mine. Haven't had them removed so far. But the passenger one is a little bit battered round the edges, following an escape attempt. Bit embarrassing as it exited just after an overtake, my resultant slowing down didn't impress the overtaken - understandably!
They do help reduce the large gap between head and seat headrest. Now the edge is trapped under the seatbelt top mount on each seat to stop any further attempts for freedom.