PREMIUM MATERIAL: Made of 100% brand new 180GSM High Density Polyethylene knitted fabric with strong stitched seam, breathable and allows cooling breeze to pass through to prevent water pooling. BREATHABLE FABRIC: 95% UV block, significantly reduce the temperature and UV sunlight in shaded area during summer time. The breathable material which will allow for a nice cool temperature and rain to pass through, so water will not pool and collapse the sail, multiple sails can also be installed to create a comfortable outside living space. OCASSION: Over a patio, lawn, garden, backyard, pool, deck, courtyard, park, carport or any other outdoor area to keep you cool in summer. We provide custom size, machining in US. EASY TO INSTALL: 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 hung up the sails with hardwares (available in our store) or ropes (free 20ft Rope included). WARRANTY: Our Sunshades come with 3-year limited warranty under normal weather and usage. Your 100% satisfaction is our goal, please feel free to contact us for more information. Note: For the HDPE fabric of shade sail may be shrink slightly. For over 16 ft, it need tolerance for ±6 inch for each side; For under 16 ft, it need tolerance for ±3 inch for each side.