Why does Noico's 36 sq ft of 80 mil matting weight 27 lbs, but this mat with supposedly the same specs weighs less than 17 lbs?

my guess is it's due to the density and/or the specific weight of the material. like 80 ml of rubber would be different than 80 ml of lead. I purchased the Siless as the most economical choice. I would like to be able to compare products as to their damping performance specifications, (not available) but a choice for the lighter weight material was a plus.I used 108 sq ft of Siless and saved 30 extra lbs weight that wouldn't have helped my electric vehicle's battery range. I also added a 157 ml layer of their sound matt overtop. I own a very quiet ride!

ASIN	B07BLSP8JV
Brand	Siless
Brand Name	Siless
Country of Publication	USA
Coverage	36 square feet
Customer Reviews	4.8 out of 5 stars 4,660 Reviews
Item Dimensions L x W	59.9L x 40.5W Centimeters
Item Thickness	2 Millimetres
Item Type Name	sound deadening
Item Weight	7.46 kg
Manufacturer	Bema Group Inc.
Material	butyl
Material Type	butyl
Product Dimensions	59.9L x 40.5W Centimeters
Recommended Uses For Product	Car soundproofing and sound dampening
UPC	696221873747 696221873648 696221873709 696221873549 696221873730 696221873631 696221873358 696221873457 696221873679 696221873310 696221873556 696221873754 696221873655 696221873334 696221873532 696221873433 696221873372 696221873471 696221873297 696221873396 696221873495 696221873693 696221873594 696221873570 696221873617 696221873716 696221873518 696221873419 696221873686 696221873587 6962218734…
Unit Count	1.0 Count

Siless 80 Mil 36 Sqft Sound Deadening Mat | Car Dampening Material | Deadener Insulation, Black, Grey

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