Dayva International Patio Furniture Covers below come in (2) fabric types. Gray Vinyl and Sandstone Beige. The Sandstone Beige Premium Tron-Weve Protective Covers are made from a space age Poly Nylon material that is extremely durable and lightweight. Independent U.S. Laboratory tests show Tron-Weve withstanding -40 degrees F and heat exceeding (by 50 degrees) the hottest recorded temperature in the world without damage.