The Coolaroo Ready-to-Hang Shade Sail provides you with just the right amount of shade wherever you need it, Ideal as a temporary or semi-permanent shade solution, the Ready-to-Hang Shade Sail's pre-attached ropes make installation a breeze. Its unique HDPE knitted fabric blocks up to 90% of the sun's harmful UV rays and is breathable to allow warm air to escape through, substantially reducing the temperatures below.