This outdoor offset umbrella is constructed of sturdy metal that hard but lightweight, durable enough to have a long lifespan. Polyester canopy serves high intensity, it does not break or change shape. 8 open spot on the top of the canopy for better airflow. Rust-resistant coating provides all-weather protection. Large sized canopy gives wider shading space. Cranking system is easy to use and require less assembling steps. Stable crossed base make sure this patio offset cantilever umbrella is stable and anti-collapse, it is also compatible with our patio umbrella base to be a complete set. Feel free to browse them out