{"product_id":"shademart-13ft-x-21ft-red-rectangle-sun-shade-sail-breathable-uv","title":"ShadeMart 13ft x 21ft Red Rectangle Sun Shade Sail - Breathable UV","description":"\u003cp\u003eOur review of the ShadeMart 13' x 21' red rectangle shade sail finds it best for homeowners and small businesses who want a simple, durable way to cut heat and sun exposure outdoors. The biggest reason to buy is its combination of woven HDPE fabric and stainless steel corner D rings, which deliver a strong, breathable canopy that blocks up to 95% of harmful UV while allowing water and air to pass through. Installation is straightforward with basic hardware, and the sail doubles as a decorative solution for patios, carports or poolside areas.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e provides durable, tear-resistant coverage that reduces sun intensity and remains breathable in all weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel D rings:\u003c\/strong\u003e heavy-duty corner attachments are secured to white webbing for reliable anchoring and long-term strength.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater permeable design:\u003c\/strong\u003e lets rain and airflow pass through so water does not pool and the area stays ventilated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh UV protection:\u003c\/strong\u003e blocks up to 95% of harmful UV rays, helping lower temperatures by roughly 10 to 15 degrees beneath the sail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e a selection of custom sizes helps match irregular venues when standard dimensions do not fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyling options:\u003c\/strong\u003e rectangle shape and multiple colors allow the sail to integrate with existing outdoor decor while adding shade.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe ShadeMart rectangle sail is ideal for homeowners with patios, pergolas, carports or poolside equipment who need cost-effective sun and UV protection without building permanent structures. It suits DIY installers who can attach the sail to posts, walls, trees or roofs using an appropriate hardware kit.\u003c\/p\u003e\u003cp\u003eThis sail is not for buyers who need full waterproof coverage or a fully rigid canopy; its water permeable weave is designed to breathe rather than keep out heavy rain. Also, those requiring precise factory-sewn dimensions should measure carefully since manual measurements can cause small variations.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStrong material and stitching provide lasting durability and reliable shade coverage.\u003c\/li\u003e\n\u003cli\u003eEasy to install with common hardware and adaptable anchor points like poles or trees.\u003c\/li\u003e\n\u003cli\u003eEffective at lowering temperatures and blocking the majority of UV radiation.\u003c\/li\u003e\n\u003cli\u003eGood value compared with building permanent shade; customers reported satisfaction with quality and price.\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 protect against heavy rain or create a dry shelter.\u003c\/li\u003e\n\u003cli\u003eManual measurement variations mean custom sizes may differ slightly from ordered dimensions.\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\u003e13' x 21'\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 Hardware\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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eWater permeable, breathable, UV resistant (up to 95%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe ShadeMart 13' x 21' red rectangle sail is a practical, affordable solution for adding shade and reducing heat in outdoor living areas. Its durable woven HDPE and stainless steel corners give it long-term usefulness, and the breathable design prevents water pooling while blocking most UV. Buy it if you want a flexible, decorative canopy for patios, carports or pool equipment; look elsewhere if you need a fully waterproof shelter.\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 water passes through rather than forming a waterproof barrier.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be attached to trees or posts?\u003c\/strong\u003e\u003cbr\u003eYes. With the proper hardware kit the sail can be anchored to poles, trees, walls, roofs and similar structures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much UV protection does it provide?\u003c\/strong\u003e\u003cbr\u003eThe sail blocks up to 95% of harmful UV rays and meaningfully reduces temperature beneath the canopy.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48206152204507,"sku":"B0C1MJTMM1","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/A1gstAiWFwL._AC_SL1500_039e3f11-48d3-4898-871e-0bb3e523ccba.jpg?v=1770354374","url":"https:\/\/gearmusthave.com\/products\/shademart-13ft-x-21ft-red-rectangle-sun-shade-sail-breathable-uv","provider":"GearMustHave","version":"1.0","type":"link"}