Don't bring in your outdoor furniture every time it looks like a storm brewing... leave them outside, even through winter! These patio furniture covers have no cloth backing that would promote mildew. These furniture tarps are pliable to -20 degrees Fahrenheit, and have double-stitched seams. Tear-resistant, 3-ply tarpaulin material is mesh-reinforced and laminated between two UV-stabilized polyethylene layers. Nylon tie-downs secure covers against strong winds. Rust-resistant grommets in double-layered hems. Full-cut fit.