{"product_id":"shademart-12ft-x-21ft-grey-sun-shade-sail-upf50-rectangle-cool","title":"ShadeMart 12ft x 21ft Grey Sun Shade Sail UPF50 Rectangle - Cool","description":"\u003cp\u003eIn this review the ShadeMart 12ft x 21ft grey rectangle sun shade sail is evaluated for homeowners and small businesses seeking robust, breathable sun protection. The bottom line: this sail is best for those who want a heavy duty, UV-blocking canopy that stays cooler than solid fabrics because it is made of woven HDPE and is water permeable; it offers excellent sun protection and durability without being waterproof. Installation is straightforward with proper hardware, and the fabric noticeably reduces heat in covered areas.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e delivers a strong, lightweight canopy that blocks up to 95% of harmful UV rays while remaining breathable to reduce heat below the sail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel corner D rings:\u003c\/strong\u003e attached to heavy duty white webbing to give secure anchor points for a reliable, long-lasting installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater permeable construction:\u003c\/strong\u003e allows rain and air to pass through so water will not pool and the sail dries quickly after storms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e multiple sizes and custom options let you fit the sail to patios, carports and pergolas when measured accurately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDecorative rectangle shape:\u003c\/strong\u003e provides a clean, modern look that integrates with outdoor spaces while offering functional shade.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis shade sail suits homeowners, small business patios, and carport owners who need broad UV protection and cooler outdoor spaces without a solid roof. Its breathable HDPE weave makes it ideal where airflow and quick drying are important, such as poolside, pergolas and yards.\u003c\/p\u003e\u003cp\u003eIt is less suitable for buyers who require a fully waterproof canopy or strict geometric precision without expecting small manual measurement variations; those needing total rain protection should look at coated or solid fabric options.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh UV protection blocks up to 95% of sunlight, significantly lowering temperatures beneath the sail.\u003c\/li\u003e\n\u003cli\u003eDurable materials including woven HDPE and stainless steel D rings provide long-term outdoor performance and resistance to wear.\u003c\/li\u003e\n\u003cli\u003eWater permeable design prevents pooling and allows airflow, improving comfort after rain or in humid conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot waterproof, so it will not keep the area fully dry during heavy rain.\u003c\/li\u003e\n\u003cli\u003eSize and shape may vary slightly due to manual measurements, so precise geometry should not be assumed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eRectangle sun shade sail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e12ft x 21ft\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\u003eUV protection\u003c\/td\u003e\n\u003ctd\u003eUp to 95% blockage (UPF50)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater handling\u003c\/td\u003e\n\u003ctd\u003eWater permeable \/ breathable (not waterproof)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware\u003c\/td\u003e\n\u003ctd\u003eStainless steel corner D rings with heavy duty white webbing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe ShadeMart 12ft x 21ft rectangle shade sail is a practical, value-oriented choice for anyone who needs durable sun protection and improved comfort outdoors. It excels where airflow and UV defense matter and is a sensible investment for patios, carports and pool areas; buyers who need a waterproof shelter should consider alternative materials.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this shade sail waterproof?\u003c\/strong\u003e\u003cbr\u003eNo, the fabric is water permeable and breathable so it will not be waterproof but will allow rain to pass through.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be cut to a custom size?\u003c\/strong\u003e\u003cbr\u003eShadeMart offers custom sizes; measure your venue accurately before ordering and expect slight manual measurement variation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow well does it block sun and heat?\u003c\/strong\u003e\u003cbr\u003eThe woven HDPE fabric blocks up to 95% of UV rays and typically lowers temperatures beneath the sail by a noticeable margin.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48601473024219,"sku":"B0BTTYCQM9","price":144.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/816THzWgLIL._AC_SL1500_791ec1dc-b8c0-4f9e-baf4-f6d4c1de7c52.jpg?v=1778373056","url":"https:\/\/gearmusthave.com\/products\/shademart-12ft-x-21ft-grey-sun-shade-sail-upf50-rectangle-cool","provider":"GearMustHave","version":"1.0","type":"link"}