What the listed shade is designed to do
Image: Intro-Tech aftermarket windshield sunshade fitted in a parked vehicle.
Bernardi describes the Intro-Tech shade as a multilayer material with a metalized outer film that reflects UV rays. The listing also identifies a UV-resistant, non-abrasive velour binding. Together, those details describe a windshield barrier intended to reduce sun exposure and help with parked-car interior comfort.
Do not translate the product description into a guaranteed cabin temperature or a promise that every surface will be cool enough to touch. Sun angle, parking duration, weather, and coverage differ. Although Bernardi advertises a maximum temperature reduction, this guide does not repeat it as a typical result because no test conditions were supplied in the reviewed listing. Check the steering wheel and other surfaces before touching them after parking.