BREATHABLE WATERPROOF MATERIAL DESIGN - Made of high quality polyester waterproof material,Allows cooling breezes and light to pass through for better airy and comfortable space, allows rains to pass through, so there's no pooling water. STRUCTURE DESIGNED FOR DURABILITY- All edges are constructed with heavy duty double layered reinforced stitched seams, prevents frayed edges and out of shape. Each corner ends with stainless Steel ring for easy hanging, extra heavy stitching to help the rings strongly attached to the shade sail. EASY TO INSTALL AND MAINTAIN - Installation: Measure and clean the area where the shade sail is to be installed. Leave an allowance of 1.5-2ft between the fixing point and the shade sail to fit hardwares/ hooks or ropes. Maintenance: Clean with mild detergent or water, do not scrub it with a stiff brush, do not put it in your washing machine, clothes drier. IDEAL SHADE SOLUTIONS - Widely used over a patio, lawn, garden, pool, pond, deck, kailyard, courtyard, backyard, dooryard, park, carport, pergola, sandbox, driveway or other outdoor area to provide 88%-90% sunshade and protect against 92% up to 95% harmful UV rays, and make your patio privacy safe, cool and fabulous. CUSTOMER SERVICE - Use time is super long and if any problem for this product, please feel free to contact us.We will try our best to solve the problem and give you reply soon.