I researched this to death for my application, (carpeted, heated, showroom.) Decided upon the Dustop product from Calif Car Cover. The unique weave prevents fine dust from filtering thru the cover during long term storage. Yet does not trap moisture causing mildew. Additionally, its increased thickness offers cushioning against potential paint chips and dings if an idiot works around the car. The lining is very soft to avoid trapped grit from scratching the flawless paint finish. Overall fit is great. Believe most of these covers are made by Cover Craft and private labeled. The Dustop fabric is a manufactured by Kimberly-Clark.