Stay cool and protected with the Coolaroo Triangle Shade Sail. Coolaroo-brand fabric is uniquely constructed to allow cool breezes to pass through and hot air to escape. This state-of-the-art material blocks up to 90 percent of the sun's harmful UV rays to keep you safely in the shade. No matter how hot it gets outside, Coolaroo helps keep temperatures down, making you more comfortable. This unique, commercial-grade knitted fabric will be unaffected by moisture and natural temperature extremes, and because it is knitted, not woven, it won't tear or fray. You'll have several colors to choose from for this triangular shade. Available sizes include 16 feet 5 inches, 11 feet 10 inches, and 9 feet 10 inches. All the hardware necessary for installation is included.