{"product_id":"21ft-x-21ft-x-21ft-black-triangle-sun-shade-sail-95-uv-block","title":"21ft x 21ft x 21ft Black Triangle Sun Shade Sail - 95% UV Block","description":"\u003cp\u003eOur review examines the 21' x 21' x 21' black triangle sun shade sail as a practical, heavy-duty option for gardens, patios, and small commercial spaces that need reliable sun protection. In this review the bottom line is clear: if you want a customizable, high-density polyethylene canopy that blocks up to 95% of UV and noticeably cools shaded areas, this shade sail delivers robust performance and long-term durability without premium pricing. It is especially useful where a bespoke fit is required and where air and water permeability are welcome for comfort and reduced wind load.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e95% UV blockage:\u003c\/strong\u003e The 200 GSM HDPE fabric blocks up to 95% of harmful UV rays, providing strong sun protection for people, pets, or gear beneath it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature reduction:\u003c\/strong\u003e The sail reduces ambient temperature by up to 15 degrees compared with unshaded areas, making outdoor spaces noticeably cooler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable fit:\u003c\/strong\u003e Ordered to measure from D-ring to D-ring so the sail can be tailored to an exact installation footprint for a neat, secure fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Reinforced edges, double-layer stitching, and stainless steel D-rings are built to resist fraying and improve longevity in outdoor conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and air permeable:\u003c\/strong\u003e The material allows airflow and water to pass through, reducing strain in wind and avoiding water pooling on the canopy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy installation:\u003c\/strong\u003e Can be attached to trees, walls, roofs, or poles using standard mounting kits, with guidance on corner gap allowances for best tension.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 21' triangle shade sail is ideal for homeowners and small businesses who need a large, tailored shade solution that prioritizes sun protection and airflow, such as patios, poolside areas, outdoor seating, or animal enclosures. Installers who want stainless fittings and reinforced stitching will appreciate the commercial-standard build and the provided 3-year assurance.\u003c\/p\u003e\n\u003cp\u003eIt is less suitable for buyers seeking a rigid, waterproof canopy or those wanting a very small, ready-made decorative shade; this product is a custom-fit fabric sail with permeability, so anyone needing fully waterproof coverage or a smaller pre-sized fabric should consider other solutions.\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\u003eHigh UV protection from the 200 GSM HDPE fabric keeps shaded spaces safer in strong sun.\u003c\/li\u003e\n\u003cli\u003eRobust, reinforced edges and stainless D-rings add to long-term durability and secure mounting.\u003c\/li\u003e\n\u003cli\u003eCustom sizing ensures a precise fit for odd-shaped or measured installations.\u003c\/li\u003e\n\u003cli\u003ePermeable fabric reduces wind load and prevents water pooling compared with solid canopies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome customers report the finished sail can appear smaller than expected, so careful measuring is essential.\u003c\/li\u003e\n\u003cli\u003eNot fully waterproof; water permeability means it will not provide complete rain protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eTriangle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e21 ft x 21 ft x 21 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e200 GSM HDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUV Protection\u003c\/td\u003e\n\u003ctd\u003eUp to 95% blockage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePermeability\u003c\/td\u003e\n\u003ctd\u003eWater and air permeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware\u003c\/td\u003e\n\u003ctd\u003eStainless steel D-rings, reinforced edges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssurance\u003c\/td\u003e\n\u003ctd\u003e3 year assurance included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 21' black triangle sun shade sail is a sensible buy for anyone who needs a large, customizable shade that prioritizes UV protection and airflow. With strong materials, reinforced hardware, and clear sizing guidance, it offers good value and long-term durability for patios, pools, and outdoor enclosures, though buyers should confirm measurements to avoid a fit that feels smaller than expected.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this sail waterproof?\u003c\/strong\u003e\u003cbr\u003eThe fabric is water and air permeable, so it will not be fully waterproof and is designed to allow drainage and airflow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I size the sail for my installation?\u003c\/strong\u003e\u003cbr\u003eMeasure from D-ring to D-ring for the exact canopy size and allow at least 0.5 ft gap between D-rings and anchor poles, reducing by 1 to 1.5 ft per side if needed for tension.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat comes reinforced and what hardware is used?\u003c\/strong\u003e\u003cbr\u003eThe sail features reinforced edges, double-layer stitching, and stainless steel D-rings; standard mounting kits are used for attachment to trees, walls, roofs, or poles.\u003c\/p\u003e","brand":"Amgo","offers":[{"title":"Default Title","offer_id":48191864013019,"sku":"B08C4WF1FM","price":133.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/912stsiSDXL._AC_SL1500_7f4d6b9c-731d-4a30-a9ea-abde9b35d827.jpg?v=1770270570","url":"https:\/\/gearmusthave.com\/products\/21ft-x-21ft-x-21ft-black-triangle-sun-shade-sail-95-uv-block","provider":"GearMustHave","version":"1.0","type":"link"}