Outsunny 18' Triangle Outdoor Patio Sun Shade Sail Canopy - Navy Blue COST EFFECTIVE: The Outsunny triangle sail shade is a cost effective alternative to a traditional awnings and do not require a permanent installation. VERSATILE USAGE: Attach your triangle sail shade virtually anywhere including columns, decks, patios, trees or the side of your home. Install in open areas with the adjustable sun sail installation kit. (Sold Separately) BLOCK UV: This sunscreen awning blocks up to 95-percent of harmful UV rays while still enjoying the sunshine. Not to be used in lieu of sunscreen. COOLING EFFECT: Significantly cools down area below the triangle sail shade by up to 6.5 degrees creating a cool place to hang out and relax. WEATHER RESISTANT: Made of high quality HDPE polyethylene weave fabric (185 gsm) and rust resistant stainless steel d-ring at each corner this sunscreen awning is colorfast and won't rot, mildew or mold.