Choosing a car cover material is a balancing act between four properties: waterproofing, UV resistance, breathability, and unit cost. No single material wins on all four.
Polyester (210D-600D Oxford)
The default choice for premium custom-fit covers. Good UV resistance with proper coating, excellent tear strength, breathable enough to prevent moisture buildup. Cost: $4-9/m² depending on coating.
Polyethylene (PE)
Cheapest material with great waterproofing, but poor UV resistance and zero breathability — moisture gets trapped underneath. Best for short-term storage in dry climates. Cost: $1-2/m².
Polypropylene non-woven
Mid-tier: breathable, decent UV resistance, low cost. Most popular for budget universal-fit covers sold through marketplaces. Cost: $2-3/m².
For B2B procurement decisions, our recommendation is polyester-PU for premium SKUs (>$30 retail), non-woven PP for sub-$15 retail, and avoiding pure PE unless your market specifically demands the lowest entry price.