{"product_id":"shademart-21-ft-x-23-ft-black-rectangle-sun-shade-sail-breathable-uv","title":"ShadeMart 21 ft x 23 ft Black Rectangle Sun Shade Sail - Breathable UV","description":"\u003cp\u003eIn this review the ShadeMart 21' x 23' Black Rectangle Sun Shade Sail is judged as a practical, heavy duty canopy for homeowners and light commercial users who need durable sun protection. The single biggest reason to buy is its combination of woven HDPE fabric and stainless steel corner D rings, which deliver long-lasting \u003cstrong\u003eUV protection\u003c\/strong\u003e and secure anchoring without feeling flimsy. It performs well where airflow and water permeability are desired rather than complete waterproofing.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWoven HDPE fabric:\u003c\/strong\u003e The high density polyethylene weave blocks up to 95% of harmful UV rays while remaining breathable so it keeps shaded areas noticeably cooler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel D rings:\u003c\/strong\u003e Heavy duty corner D rings attached to white webbing provide strong, corrosion-resistant anchor points for secure installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater and air permeable:\u003c\/strong\u003e The design allows rain and wind to pass through rather than pooling, which reduces stress on the canopy and the mounting points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom sizing available:\u003c\/strong\u003e ShadeMart offers custom sizes so the sail can be tailored to patios, carports, pergolas or garden areas when standard sizes do not fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectangle styling:\u003c\/strong\u003e The simple rectangle shape integrates easily with existing outdoor layouts and can be used decoratively as well as functionally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple mounting options:\u003c\/strong\u003e With appropriate hardware the sail can be anchored to poles, trees, walls or roofs for flexible placement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe ShadeMart rectangle shade sail is best for homeowners, gardeners and small-business outdoor spaces that need reliable sun filtering without full waterproofing. It suits patios, carports, pergolas and poolside areas where airflow and temperature reduction are priorities.\u003c\/p\u003e\u003cp\u003eIt is not ideal for situations that require full rain protection or where absolute blackout shade is needed; shoppers who need a waterproof canopy or precise color\/size matching should consider a different style or confirm custom sizing before purchase.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEffective \u003cstrong\u003eUV protection\u003c\/strong\u003e that blocks up to 95% of harmful rays and lowers temperatures.\u003c\/li\u003e\n\u003cli\u003eDurable construction with woven HDPE and reinforced white webbing for long service life.\u003c\/li\u003e\n\u003cli\u003eStainless steel D rings provide reliable anchor points and resist corrosion.\u003c\/li\u003e\n\u003cli\u003eAllows water and air to pass through, preventing pooling and reducing wind load.\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 provide complete rain protection in heavy storms.\u003c\/li\u003e\n\u003cli\u003eColor and measured size can vary slightly due to manual measurements and fabric characteristics.\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\u003e21' x 23'\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 on heavy duty white webbing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctionality\u003c\/td\u003e\n\u003ctd\u003eWater and air permeable, blocks up to 95% UV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCustom options\u003c\/td\u003e\n\u003ctd\u003eCustom sizes available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe ShadeMart 21' x 23' rectangle shade sail is a strong value for anyone needing durable, breathable sun protection that reduces heat and resists wear. It is particularly good for patios, carports and gardens where water permeability is preferable to pooling, and the reinforced corners and stainless hardware make installation reassuringly robust.\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 designed to allow water through rather than be fully waterproof.\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 beneath the canopy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it be custom sized?\u003c\/strong\u003e\u003cbr\u003eYes. ShadeMart offers custom sizes but customers should measure their site carefully since manual measurements can cause slight variations.\u003c\/p\u003e","brand":"ShadeMart","offers":[{"title":"Default Title","offer_id":48192993722587,"sku":"B0B8F687XB","price":220.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81KPSgNRfmL._AC_SL1500_802ef0e0-39b0-4cfe-a29f-ffb10e3dc344.jpg?v=1770297980","url":"https:\/\/gearmusthave.com\/products\/shademart-21-ft-x-23-ft-black-rectangle-sun-shade-sail-breathable-uv","provider":"GearMustHave","version":"1.0","type":"link"}