Nearest equivalent made today is the Budge Duro 3-layer car cover. Search for its specs on Amazon, who says:
"The Duro Car Cover ... uses three layers of spun-bond polypropylene to protecting against dust, debris, tree sap, water, UV exposure and more. Ultrasonically welded seams provide added durability, and the non-abrasive lining won’t scratch your car."
(Of course we know that "older" probably means "better-made" :)
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