The "thing" (Amazon Dashboard Mount) actually holds! And even when something meaner trips over pothole paved roads. Through the "bag" and the anti-slip bottom surface remains the holder where he is and thus the Navi also. It eliminates annoying docking with windshields and restricted view.
... And who then did not completely trust the thing: the holder can be glued (but as I said in my opinion not necessary).
Conclusion: absolute buy recommendation!