The umbrella canopy features polyester cloth to keep you cool and comfortable. The material is strong enough to hold up against the elements, and the sunburn rays are blocked. This rectangular patio umbrella is made of rust-free powder-coated steel poles and 6 sturdy heavy-duty square ribs for longer usage. The 9ft Patio umbrella comes with 1.5 inches diameter steel pole which provides stronger support than standard round poles. The easy-to-use crank system makes it easy to raise and lower the canopy. The push-button tilt technology also makes tilting the rectangular patio umbrella effortless so that you can enjoy the shade at any angle with this 9ft wide outdoor patio umbrella(base is not included). Vented top which is conducive to air circulation and reducing sultry. Keeping you cool and comfortable from the hot and hush sun. This rectangle patio umbrella has an extra-wide canopy that is perfect for adding shade to your 42" - 54" round, square, or rectangle table with room for 4 to 6 chairs. Chose this patio umbrella to enjoy the sunshine without sunburn. Also, it can''t stop you from enjoying patio time when a rainy day. Avoid sunburn and rain, and enjoy the patio time with this market umbrella.