FABRIC: Sunbrella Performance Fabrics has been engineered to withstand the outdoor elements since 1960 made from 100% solution-dyed acrylic fabric offering a 5-year non-fade warranty with built in UV protection. Operation: Crank to Open with push button tilt allowing you to easily adjust keeping you shaded at all times of the day. Construction: Entire frame is made from rust-free all aluminum with stainless steel hardware, 8 ribs for added canopy support, 1.5-inch diameter aluminum pole providing a stronger more durable frame, built-in wind vent and ties to close the umbrella totaling superior weather protection. Weather Protection: Featuring a Built in Wind Vent adding extra protection in windy conditions along with sewn in fabric ties to secure the canopy when not in use. Optional base is not included and must be purchased separately