wind deflectors for windows

Just checked and mine are Heko. I did not have any issues with the window going up as Daniel30 ^^^^, but after about 6 months I noticed they had started to slip down slightly, I suspect as the double sided tape they apply had stopped working. I simply obtained another 4 clips and fitted these with the originals, it's been fine since. Very happy with finish and look for them, no complaints.
So if you go Heko ask for some etrxa clips, usually they will send them free of charge.

now fitted and are ok

Yes. But not on vista or 10.

Lambert wrote: I have been looking at a set of these as an alternative to the air conditioning. Is there anything to recommend the genuine over the heko?

That's an interesting question, aircon v deflectors.
I find the deflectors are best for when it is raining so I can have a small amount of ventilation.
When it is terrifically hot - like 26°+ Celsius - I prefer the aircon.
Also on motorway type driving the deflectors allow the window to be open without letting too much noise in.
On the downside I am sure they add to drag.
Also I had the in-channel ones a few times and hated them.