{"product_id":"shademart-12-ft-x-21-ft-beige-sun-shade-sail-upf50-rectangle-cool","title":"ShadeMart 12 ft x 21 ft Beige Sun Shade Sail UPF50 Rectangle - Cool","description":"\u003cp\u003eOur review of the ShadeMart 12 ft x 21 ft beige rectangle shade sail finds it best for homeowners and small businesses wanting a durable, breathable sun cover that cuts heat and UV without trapping moisture. The single biggest reason to buy is its combination of woven HDPE fabric and stainless steel corner D rings, which gives a feeling of sturdy, long-lasting protection while remaining water permeable. Installation is straightforward with basic hardware, and the sail's UPF50 protection noticeably reduces direct sunlight and temperature under the canopy.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE material:\u003c\/strong\u003e The high density polyethylene fabric resists tearing and provides a stable shade surface that lets air circulate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPF50 sun protection:\u003c\/strong\u003e Blocks up to 95% of harmful UV rays, helping lower ambient temperatures in covered areas by roughly 10 to 15 degrees.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel corner D rings:\u003c\/strong\u003e Heavy duty D rings on reinforced white webbing create secure anchor points for longer outdoor use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater permeable design:\u003c\/strong\u003e Breathable weave allows water to pass through so pooling is avoided and airflow continues in rainy conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e Multiple custom sizes are offered so buyers can match patios, carports, pergolas, and pool areas when measured carefully.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis shade sail is ideal for homeowners, renters with adjustable mounting points, and small businesses that need a cost-effective way to reduce sun exposure over patios, carports, and poolside seating. It works well where airflow is desired and where complete waterproofing is not needed.\u003c\/p\u003e\u003cp\u003eIt is less suitable for buyers who need a fully waterproof canopy or a perfectly rigid rectangular cover; the fabric is intentionally water permeable and small measurement variance can occur, so those seeking a sealed roof or exact industrial tolerances should look at hard-canopy alternatives.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDurable woven HDPE stands up to outdoor conditions and handles wind when anchored properly.\u003c\/li\u003e\n\u003cli\u003eEffective UPF50 protection reduces sun exposure and cooling demands for shaded spaces.\u003c\/li\u003e\n\u003cli\u003eBreathable, water permeable fabric prevents pooling and encourages airflow under the sail.\u003c\/li\u003e\n\u003cli\u003eStainless steel D rings and heavy webbing simplify secure mounting and increase longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe material is not waterproof, so it will not keep heavy rain from passing through.\u003c\/li\u003e\n\u003cli\u003eSize and shape can vary slightly due to manual measurement, so careful measuring is required before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\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\u003e12 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\u003eUV Protection\u003c\/td\u003e\n\u003ctd\u003eUPF50 (blocks up to 95% UV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater Resistance\u003c\/td\u003e\n\u003ctd\u003eWater permeable \/ 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 on heavy duty webbing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe ShadeMart 12 ft x 21 ft beige rectangle shade sail is a practical, value-oriented choice for anyone needing reliable UV protection and improved comfort in outdoor seating or parking areas. Its breathability and sturdy attachments make it a durable option for patios, carports, and poolsides, provided you accept that it is not waterproof and that custom measurements must be checked before purchase.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eIs this sail waterproof?\u003c\/strong\u003e\u003cbr\u003eAnswer. No, the fabric is water permeable and designed to let water pass through rather than create a waterproof roof.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it reduce temperature under the sail?\u003c\/strong\u003e\u003cbr\u003eAnswer. Yes, the UPF50 fabric blocks most UV and typically lowers ambient temperatures in shaded areas by about 10 to 15 degrees.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be attached to trees or poles?\u003c\/strong\u003e\u003cbr\u003eAnswer. Yes, with the proper hardware kits the sail can be anchored to poles, trees, walls, or roofs; secure anchors are recommended for durability.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48684913328347,"sku":"B0B69Y7JK8","price":144.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81tjJ5EiwoL._AC_SL1500_446e872a-5adc-4e86-98e3-764b1ae4816c.jpg?v=1778681235","url":"https:\/\/gearmusthave.com\/products\/shademart-12-ft-x-21-ft-beige-sun-shade-sail-upf50-rectangle-cool","provider":"GearMustHave","version":"1.0","type":"link"}