Super flat and holds great!

In the beginning I had similar teething problems, as many others here. What I've noticed is that the surface of the ground, whereupon the grid pad are subsequently / should be liable, must be really clean. For I have laid the pad right after the purchase in the car and it has slipped me repeatedly. But, after a thorough cleaning of the surface, it now holds as stuck. Just great. Even in my Smart where Amaturoberfläche is very coarse and cloth-like, keeps the pad 1A.
I've been using it so far for my permanent parking card and my garage door opener - even with sudden braking in the rush hour on the highway) flew me not of these things.
Another reason for my purchase was the size and especially that it is really very flat.
Conclusion: I can only recommend the grid pad. I was convinced it anyway.