a small manufacturing defect that ruins everything!

This is a nice product, lightweight and flexible, modern design.
But a strike any manufacturing defect: the clamps do not have the standard form of small hook that can permanently and securely aggripper the air vents.
It looks like a mini clothespin.
So, when you give a little bit, or press a bit depressing the cup, support falls.
With a hot coffee while driving, it is the insured accident.
Typically the type of product manufactured in China by people who have no idea of ​​the end use.

For the good shape of the hook, zoom the product the seller c1518