Square 10x10 ft Sun Sail Shade Cover - Sand Color Effective Harmful UV Blocking Optimum Ventilation: The fabric enables cool air to penetrate the shade sail, offering an airy, comfortable, and well-ventilated space. Air Circulation Possible - Specially Knitted Polyethylene Fabric Dimension: 12.5 feet x 12.5 feet Each corner of the shade has metal hooks and it takes minutes to set up