{"product_id":"18ft-x-20ft-blue-sun-shade-sail-upf50-rectangle-cools-patio","title":"18ft x 20ft Blue Sun Shade Sail UPF50 Rectangle - Cools Patio","description":"\u003cp\u003eIn this review of the 18' x 20' Blue Sun Shade Sail UPF50 Rectangle, the bottom line is simple: it is a practical, heavy duty shade solution for anyone wanting to lower temperatures and block harmful rays without adding a permanent structure. The reviewer found it ideal for patios, carports and poolside areas where breathability and UV protection matter. Most users will appreciate the fabric's \u003cstrong\u003eUV protection\u003c\/strong\u003e and durable attachment points, and the review focuses on real-world performance rather than marketing claims.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e provides a breathable canopy that lets air and water pass through while blocking up to 95% of UV rays to reduce surface and air temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel D rings:\u003c\/strong\u003e heavy duty corner rings attached to white webbing give reliable anchor points that resist corrosion and handle tension well.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater permeable design:\u003c\/strong\u003e the sail drains and breathes so it does not pool water and reduces wind pressure compared with solid tarps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e the maker offers tailored sizes so you can match unusual spaces when the standard 18' x 20' size does not fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectangle styling:\u003c\/strong\u003e a clean geometric shape that integrates with many outdoor designs and can be layered or combined for broader coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is best for homeowners and renters who want a semi-permanent shade solution for a \u003cstrong\u003epatio, carport or pool\u003c\/strong\u003e area and who value breathability and UV blocking over full waterproofing. It works well when anchored to posts, trees or building walls using proper hardware kits.\u003c\/p\u003e\n\u003cp\u003eIt is not ideal for those who need a fully waterproof cover or need complete sun blocking with no light transmission; if you require a rainproof shelter or an enclosed structure, consider a different style of canopy or hard top instead.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDurable woven HDPE material that customers report as long lasting and holding up well in strong winds.\u003c\/li\u003e\n\u003cli\u003eEffective at reducing temperature and providing substantial shade while remaining breathable.\u003c\/li\u003e\n\u003cli\u003eStainless steel D rings and heavy webbing make installation secure when paired with the right hardware.\u003c\/li\u003e\n\u003cli\u003eCustom sizes available to fit nonstandard outdoor spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot waterproof; water permeability means it will not keep rain out of the covered area.\u003c\/li\u003e\n\u003cli\u003eManual sizing and measurement can lead to slight variations, so careful measurement is required before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eShadeMart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eRectangle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e18' x 20' (can be customized)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eWoven HDPE (High Density Polyethylene)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorner Hardware\u003c\/td\u003e\n\u003ctd\u003eStainless steel D rings on heavy white webbing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctionality\u003c\/td\u003e\n\u003ctd\u003eWater permeable, breathable, blocks up to 95% UV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 18' x 20' ShadeMart rectangle sail is a sensible value purchase for anyone needing reliable \u003cstrong\u003eUV shading\u003c\/strong\u003e and improved comfort outdoors without a permanent build. It combines durable materials and strong anchor points with breathable performance, making it a good choice for patios, carports and pool areas when rainproofing is not required.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this shade sail waterproof?\u003c\/strong\u003e\u003cbr\u003eNo. The fabric is water permeable and designed to allow water and air to pass through rather than provide a waterproof cover.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be installed on my house or trees?\u003c\/strong\u003e\u003cbr\u003eYes. With the proper hardware kits the sail can be attached to poles, trees, walls, roofs and other structures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it block sun and heat?\u003c\/strong\u003e\u003cbr\u003eYes. The woven HDPE blocks up to 95% of UV rays and typically lowers temperatures under the sail, depending on placement and airflow.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48740439294171,"sku":"B09157QWVM","price":173.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91CyVuDkKhL._AC_SL1500_6030c522-1da7-4c3a-a932-b03a985a4a7d.jpg?v=1778959738","url":"https:\/\/gearmusthave.com\/products\/18ft-x-20ft-blue-sun-shade-sail-upf50-rectangle-cools-patio","provider":"GearMustHave","version":"1.0","type":"link"}