{"product_id":"shademart-15-ft-x-21-ft-red-rectangle-sun-shade-sail-upf50","title":"ShadeMart 15 ft x 21 ft Red Rectangle Sun Shade Sail - UPF50","description":"\u003cp\u003eIn this review the ShadeMart 15 ft x 21 ft red rectangle sun shade sail is evaluated for homeowners and small-business owners who need durable, breathable sun protection. The biggest reason to buy is its combination of woven HDPE fabric and stainless steel D rings, which delivers strong UV blocking and long-term durability without trapping heat. The review focuses on real-world installation, weather performance, and material quality to help decide if this canopy fits a patio, carport, pergola, or poolside application.\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 blocks up to 95% of harmful UV rays while allowing air and water to pass through, reducing heat beneath the sail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel corner D rings:\u003c\/strong\u003e are attached to heavy duty white webbing for secure anchor points that resist rust and looseness over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater permeable design:\u003c\/strong\u003e lets rainwater drain through instead of pooling, so the sail keeps shade without sagging or holding water after showers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom size options:\u003c\/strong\u003e the product line includes multiple sizes so you can match uncommon spaces, as long as you measure the venue accurately before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectangle styling:\u003c\/strong\u003e offers a clean, architectural look that integrates with many outdoor spaces and can be mounted to poles, trees, walls, or roofs using proper hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe ShadeMart rectangle shade sail is best for homeowners, renters with permission to mount anchors, and small businesses seeking cost-effective sun protection for patios, carports, pergolas, or pool areas. It particularly suits those who prioritize UV protection and airflow over full waterproofing.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include buyers who need a fully waterproof canopy or a permanently mounted hard roof solution, and anyone who cannot attach secure anchor points; this sail is not a substitute for a rigid cover or a waterproof awning.\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 blocks most harmful rays, helping lower temperatures underneath.\u003c\/li\u003e\n\u003cli\u003eDurable construction with woven HDPE fabric and stainless steel D rings that customers say holds up in wind and hail.\u003c\/li\u003e\n\u003cli\u003eEasy to install for one or two people with the right hardware, and available in custom sizes and multiple colors.\u003c\/li\u003e\n\u003cli\u003eBreathable and water permeable design prevents pooling and improves airflow compared with solid covers.\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, so it will not keep out heavy rain or create a dry covered area underneath.\u003c\/li\u003e\n\u003cli\u003eRequires careful measuring and proper hardware for a secure long-term installation.\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\u003e15 ft x 21 ft\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 fittings\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, UPF50 UV resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon uses\u003c\/td\u003e\n\u003ctd\u003ePatio, carport, pergola, pool, yard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe ShadeMart 15 ft x 21 ft red rectangle sail is a solid, budget-friendly choice for anyone needing dependable UV protection and airflow for outdoor living spaces. It is good value for people who want a durable, breathable canopy that resists rust and holds up in varied weather, but those requiring waterproof coverage should consider other options.\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 full waterproofing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the corner D rings rust?\u003c\/strong\u003e\u003cbr\u003eNo. The corner D rings are stainless steel and attached to heavy duty webbing to resist rust and remain secure over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I customize the size?\u003c\/strong\u003e\u003cbr\u003eYes. ShadeMart offers a selection of custom sizes, but you should measure your venue accurately since sails can vary due to manual measurement.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48193424883931,"sku":"B0B69S9FT7","price":160.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/A1gstAiWFwL._AC_SL1500_ef2dde0e-920c-44c4-9972-d2273346e14d.jpg?v=1769795277","url":"https:\/\/gearmusthave.com\/products\/shademart-15-ft-x-21-ft-red-rectangle-sun-shade-sail-upf50","provider":"GearMustHave","version":"1.0","type":"link"}