It will not shake the feeling Navigon only sold cheap China scrap. Not only the holder, also available as an accessory Navigation System Case is garbage. There is the incredibly bad zipper. 20x on and done, you've got the strap in his hand and the part is useless.
(Now I have emailed the Navigon service. Let's see what happens. If in doubt, the decision that the next Navi will no longer Navigon.)
My conclusion: Stay away from the garbage!
Addendum: Although the holder nix is good - the service from Navigon is 1A! Got within a few days both a new Navi-holder as well as a new bag. Must be said sometimes ;-)
Addendum No.2. Had the old holder with a little "Pattex Repair Extreme" patched up. Continues to this day without any problems and seems more stable than in its original state ...: - \