First off I sure do like the way the standard cool cap I just purchased functions. The inside of my Audi A6 is ridiculously cool. The rear window and the windshield are actually cool to the touch even after hours in the sun. There is no doubt in my mind, that come Summer, there will be a dramatic reduction in interior temps and a near total blocking of damaging UV rays.
A really great product by Burke and Jimmy, for sure!
I was a United States Army Weather Observer and worked at the Atmospheric Sciences Laboratory in Fort Huachuca Arizona...my specialty was micro-meteorology and that included the measurement of surface temperatures and the sun's intensity using pyrheliometers...
Although Ft. Huachuca has some good elevation to it...the base Headquarter's flagpole is almost exactly a mile above sea level...don't be fooled by the elevation...not only is it hot there, but the sun's intensity is simply brutal...I used to measure it.
This was in the mid 1970's and well before skin sunscreen was in vogue and when I was out in that sun even in summer...long sleeves were always worn or else.
I bring all that up because it is precisely that same solar intensity (actually irradiance) that just tweaks the interior temperatures of an automobile with closed windows and even more to the Cool Cap Cover point...whether the windows are open or not...the actual surface temperature of the car's dash. As you well know...the reflective material you're using is literally "denying" the sun's ability to trigger the enormous heating and destructive UV processes that that same solar energy will trigger if it is allowed to reach inside the car. I'm kind of sad actually because had I known about Cool Cap a couple years ago I would have purchased one for a SAAB 9-5 I have stashed in the driveway and the nice wood finish on the dash and interior would NOT look like it does right now. But that is NOT going to happen to either of my current daily drivers.
One thing I have noticed is that some folks who have purchased Cool Caps have enjoyed it's protection...BUT they have commented about it's durability, and frankly, that is NOT your or the reflective material’s "fault". That is where my military weather training really kicks in. The fact of the matter is that...for the exact reasons I just cited above...any material that reflects the amount of the sun's energy that this Cool Cap car cover might expect to reflect over a one or two year period when used in a direct sun location...ANY material that accomplishes that amount of reflection is GOING to degrade in places. Maybe let me hone that last sentence down a little...any AFFORDABLE and easily "storable" (Flexible Foldable) material is going to degrade because of what it has just been subjected to.
But I'm not sure how to make those folks who expect these Cool Cap covers to last for years and years on end without any failure points in the material...without a fairly brief lesson in science....
I'm not sure how to ever explain the durability factor to them.
In my opinion if these Cool Caps last through 3 Pennsylvania summer seasons I would consider that a tremendous value...and actually 2 Fort Huachuca years would be a brutally impact-ful testament. Fort Huachuca is not as hot as Death Valley, but I guarantee the solar energy that reaches a parked car located at Fort Huachuca is receiving more damaging sun than a car parked in Death Valley.
There is a linear correlation to potential solar intensity and altitude above sea level in cloudless skies. Denver is notoriously brutal for UV destruction. Pittsburgh Paint & Glass whose headquarters is here in Pittsburgh has test sample sites all over the world where they let painted and coated test samples simply bake out in the elements to determine durability. They have a big test bed in Denver because of the UV there.
So your product, Burke & Jimmy, is surely a great one.....it's simple to use, it IS AFFORDABLE when what it does and what it prevents is broken down over time. If people think a 5 dollar windshield screen is all they need to protect their likely MOST expensive investment besides a home...well then...their 5 dollar windshield screen is NOT going to help them in any way and they might as well just buy a six pack of Budweiser and call it a sunny day. lol.
Cool Cap is definitely a great product.
Atmospheric Sciences Laboratory, Fort Huachuca Arizona