PCI Patio Furniture Covers utilizes only rich, luxurious vinyl that has been UV treated for years of stability outdoors. Our Dura-Gard vinyl is unlike any in today’s market. It’s 7mil. thick, with a 4-ounce fleece polypropylene backing, which is first compressed into a flat sheet and then laminated onto the vinyl. This process ensures the fleece won’t come off on the furniture like traditional, fuzzy backed vinyl, while adding an incredible amount of strength to the cover that fuzzy backed vinyl’s can’t match.