But: Very good fit, you need a bit of skill when mounting because they really sit well. You have to bend a little so to get them in the window frame, but "a matter of 5 minutes". So I had the impression that they can not fall out by itself.
No problem with closing the window - even the very first time (pinch has not addressed). Since pinched or even grinds nothing when opening / closing and it is not more difficult than before. Either because I did it behaved according to the instructions and had checked several times; or it is due to the tolerance of the door frame together and since I had just lucky - because there is actually enough room left for the window.
Definitely a very good alternative to the parts that you can buy at VW dealers, especially because one also gets as a product with approval - definitely not regret it;)