The Fiberbuilt 7 1/2 Foot Square market umbrella features a heavy duty aluminum two-piece pole powder coated in a varity of colors. Includes flexible fiberglass ribs and hub with Pulley and Pin lift. It holds up well to strong winds and has a rust-free frame. Single sewn-in vent with vent ties and storage ties come standard. Top is made of heavy duty Sunbrella marine grade, solution dyed acrylic fabric.