Positives:
+ Durability of the shield
+ Durability of the suction cup (this lose, especially in summer often in this life but still works even though he hung all the time in the windshield)
+ "Suction" (it holds even when you turn the shield times faster and not so firmly pressed super, I have not yet fallen down so far)
+ Color fastness (was no change in the color determined by the sunlight)
Who as a sign the required I would recommend this here.