Features: Waterproof sails are made from high density polyester that blocks up to 95% of the sun's UV rays and repels up to 98% of rain water. Waterproof and easy to install, will lower the ambient air temperature reducing your properties cooling cost and energy consumption Constructed of high density polyester with UV-stabilized fabric for greater durability and protection. 【Easy to Install 】 Find your supports and tight the shade sail to them with ropes by the D-ring, the ropes are included in the bags you received. Install at a 20-40 degree angle with maximum tension to allow runoff. Widely used over a patio, lawn, garden, pool, pond, deck, kailyard, courtyard, backyard, dooryard, park, carport, pergola, sandbox, driveway or other outdoor area, and make your patio.