Do what you would expect, but not equal to / at once.

In principle function Renal every 3 satisfactory. With a big Mercedes SUV (ML), but there are days where the windscreen was toned.
The lie about it:
1. the car is really huge
2. the pillow was often on the center console, as it slipped away while driving.
With its commitment to pad on the dashboard and not on the center console, there are virtually no fog on the windshield / side windows the next morning.
If you want to, even behind that remain the discs free, you should also there stand a 2nd pillow.

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I have now 3 of these bags in use in cars, staying outside in the winter.
They are nice and big and heavy, long as the thigh, you can feel in the picture.

After the first night we were at first disappointed because the disc from the inside was still fogged.
But then it has always funktionniert better.
Obviously, the bag needs some time until it develops its effect fully.
After 2-3 nights outdoors he funktionniert as expected.

During the day, the water evaporates again when the heater is on. So we would have not put the bags on the heater.

It is true that if you go, the bag back on the dash from sliding, because the bottom of plastic and is pretty smooth (thus ev. Any water does not come out). But it is the part when you are driving on the dashboard but on the center console. Therefore, I can not understand the devaluation on 1 star for this. Presumably, an evaluation by a competitor who is angry.

One can certainly 1 sack of rice itself sew the same effect achieved, but at the price, why bother?

I wonder if I should not put a few bags in my garage to prevent rust on tools and cans.
From me the bag gets full review.