DURABLE POLYESTER FABRIC: Water- and fade-resistant spun polyester fabric keeps your umbrella looking great all season EASY OPEN/CLOSE CRANK: A simple hand crank helps to make opening and closing the umbrella a breeze RUST-RESISTANT FINISH: The ribs and pole are coated in a protective, rust-resistant powder finish, making it ideal for the outdoors SINGLE WIND VENT: Allows additional cooling by increasing airflow throughout the umbrella COMPATIBLE BASES: Search SKY3765 or SKY3784 for round bases that go well with tables. Search SKY5070 for an 81-pound rolling base. COMPATIBLE BASE: