Effective Harmful UV Blocking - Dimension: 12.5 feet x 12.5 feet * Optimum Ventilation: The fabric enables cool air to penetrate the shade sail, offering an airy, comfortable, and well-ventilated space. * Comfortably shades 20 to 30 people deck - Each corner of the shade has metal hooks and it takes minutes to set * Air Circulation Possible - Specially Knitted Polyethylene Fabric * 12.5 ft Square SAND Shade Sail and includes the tension mounted steel D-rings which are double stitched into the corners. - 4 Nylon Ropes - 1 Carrying Bag