Vinyl fabric is made of denim-backed vinyl that is economical, waterproof and easy to clean. Frames are made of heavy-duty 7/8" diameter aluminum tubing. Frames are made of heavy-duty 7/8" diameter aluminum tubing. Frames have multiple-bow construction for strength and rigidity and the main bow legs of the frame have double-wall aluminum tubes for additional strength. Frames include mounting hardware for mounting to a flat horizontal or vertical surface and black nylon fittings.