{"product_id":"shademart-17-ft-x-21-ft-brown-sun-shade-sail-upf50-rectangle-durable","title":"ShadeMart 17 ft x 21 ft Brown Sun Shade Sail UPF50 Rectangle - Durable","description":"\u003cp\u003eIn this review the ShadeMart 17 ft x 21 ft brown sun shade sail is assessed for homeowners and small commercial spaces seeking a durable, breathable canopy that significantly reduces sun exposure. The bottom line: this woven HDPE rectangle shade sail is best for patios, carports, poolside areas or vegetable gardens where UV protection and airflow matter more than full waterproofing. Its strongest selling point is reliable sun blockage and temperature reduction while remaining easy to install with its reinforced corners.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e the material blocks up to 95% of harmful UV rays while staying breathable so heat buildup is reduced.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel D rings:\u003c\/strong\u003e heavy duty corner hardware is attached to white webbing for secure anchor points and long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and air permeable:\u003c\/strong\u003e the sail lets rain and breeze pass through, preventing pooling and reducing wind stress on the fabric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom size options:\u003c\/strong\u003e a range of sizes is available so buyers can choose or request dimensions that match their patio, pergola or carport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectangle styling:\u003c\/strong\u003e the simple shape integrates with many outdoor designs and provides broad, even shade coverage for seating and planting areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow maintenance:\u003c\/strong\u003e the synthetic weave resists rot and tears, making it suitable for seasonal and year-round outdoor use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis shade sail is a good match for homeowners who need effective sun protection for patios, poolsides, vegetable gardens or carports and who prioritize airflow and UV blocking over complete waterproofing. It also fits DIY installers who can mount the sail to posts, walls or trees using proper hardware kits.\u003c\/p\u003e\u003cp\u003eIt is less suitable for buyers who require a fully waterproof canopy or a rigid permanent structure; those customers should look for waterproof awnings or hard patio covers instead. Also measure carefully before ordering a custom size because fabric dimensions vary slightly with manual measurement.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBlocks up to 95% of UV rays, noticeably lowering temperatures in shaded areas.\u003c\/li\u003e\n\u003cli\u003eBreathable HDPE weave prevents water pooling and reduces wind load on the sail.\u003c\/li\u003e\n\u003cli\u003eStainless steel D rings with heavy duty webbing provide secure attachment points and strong stitching.\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 an area dry in heavy rain.\u003c\/li\u003e\n\u003cli\u003eColor and size may vary slightly due to manual measurements and dye differences.\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\u003e17 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\u003eHardware\u003c\/td\u003e\n\u003ctd\u003eStainless steel D rings with heavy duty white webbing\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\u003eUV protection\u003c\/td\u003e\n\u003ctd\u003eUp to 95% UPF50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe ShadeMart 17 ft x 21 ft rectangle shade sail is a practical, value-minded choice for anyone who needs reliable sun protection and airflow for patios, pools or gardens. Its durable woven HDPE, reinforced corners and ease of installation make it a strong option where UV blocking and breathability are priorities; buyers seeking full waterproofing should consider alternative covers.\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 keep an area dry in heavy rain.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be attached to trees or posts?\u003c\/strong\u003e\u003cbr\u003eYes. With appropriate hardware kits the sail can be mounted to poles, trees, walls or roofs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much UV protection does it provide?\u003c\/strong\u003e\u003cbr\u003eThe woven HDPE fabric blocks up to about 95% of harmful UV rays, helping lower temperatures in shaded areas.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48194139947227,"sku":"B0BL62788L","price":173.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91kdNZUBkQL._AC_SL1500_ba4fc509-6df9-4d12-bacc-d5555de26397.jpg?v=1770233313","url":"https:\/\/gearmusthave.com\/products\/shademart-17-ft-x-21-ft-brown-sun-shade-sail-upf50-rectangle-durable","provider":"GearMustHave","version":"1.0","type":"link"}