This Fiberbuilt 9 foot hexagonal patio umbrella features a powder coated aluminum two piece 1 1/2 inch pole. Fiberglass ribs and molded nylon joints, hubs and end tips create a sturdy structure. The market canopy style top is made of a spun acrylic fabric. The easy to use crank lift makes opening and closing a breeze. Incredible strength and flexibility to absorb strong wind and abuse. Rust-free frame due to stainless steel and aluminum hardware with nylon parts.