Deluxe 9ft 8-rib Sun Shading Hanging Offset Square Umbrella with Aluminum Pole 9'x9' square umbrella canopy can offer larger shady area than 9' diameter octagonal umbrellas. Thicker and more durable and with better water-proof effect than other 160g/sq polyester canopies. Heavy duty thicken aluminum pole with powder coated finish. Tilt system for more desired angles of shading. Double protection for ribs with rib tip cover and thickened bag to assure stability and best stretch.