12ft x 12ft x 17ft Blue Right Triangle Sun Shade Sail - 95% UV Block

Our review of this 12' x 12' x 17' blue right triangle shade sail finds it best for homeowners and small commercial spaces that need targeted sun protection and cooler outdoor spots. The single biggest reason to buy is its combination of heavy-duty 200 GSM HDPE fabric and 95% UV blockage, which delivers noticeably cooler shaded areas and strong, long-lasting coverage without a rigid canopy. Reviewers who value durability and a customizable fit will appreciate the reinforced edges and stainless steel D-rings for secure mounting.

Key Features

• 95% UV protection: The 200 GSM HDPE material blocks up to 95% of harmful UV rays so outdoor activities stay safer in peak sun.
• Temperature reduction: Tested use shows shaded areas can be up to 15 degrees cooler than unshaded spots, improving comfort during hot afternoons.
• Customizable fit: Orders are made to measured D-ring to D-ring dimensions so the sail can be tailored to irregular spaces or specific mounting points.
• Durable construction: Reinforced edges, double-layer stitching and stainless steel D-rings provide commercial-standard strength and reduced fraying over time.
• Permeable design: The fabric is water and air permeable, which reduces wind load and prevents pooling during light rain.
• Easy installation: The sail installs to trees, walls, roofs or poles using basic mounting hardware and simple spacing rules for best tension.

Who It's For

This shade sail suits backyard owners, small cafes or farmers needing a robust shade solution that can be custom-sized. It is ideal where a durable, breathable cover is required rather than a fully waterproof canopy, and for people who want to cut UV exposure while lowering surface temperatures.

Those who need a fully waterproof roof, a rigid gazebo, or who prefer a premeasured fixed-size kit without customization options should look elsewhere. Also, buyers expecting a large coverage area from these dimensions should confirm measurements carefully because a few customers reported the size appeared smaller than expected.

Pros & Cons

Pros

• High sun protection blocks up to 95% of UV, helping protect skin and surfaces.
• Sturdy 200 GSM HDPE with reinforced edges and stainless D-rings delivers commercial-grade durability.
• Breathable fabric reduces wind stress and lowers temperatures by up to 15 degrees under shade.
• Custom sizing from D-ring to D-ring allows a tailored fit for unusual spaces.

Cons

• Not fully waterproof; light rain passes through the permeable fabric rather than shedding like a coated canopy.
• Some buyers reported the installed sail seemed surprisingly small, so precise measurement is important.

Specifications

Shape	Right triangle
Size	12' x 12' x 17'
Color	Blue
Material	200 GSM HDPE (water & air permeable)
UV Protection	Up to 95% blockage
Hardware	Stainless steel D-rings; reinforced edges
Assurance	3 year assurance included

Our Verdict

This custom 12' x 12' x 17' blue right triangle shade sail is a smart buy for those who need high UV protection, cooler shaded areas and commercial-grade durability in a breathable design. It represents good value when purchased to precise measurements, and works especially well for patios, play areas, small outdoor dining spots or livestock shade where airflow and sun blockage matter more than full waterproofing.

Frequently Asked Questions

Is this shade sail waterproof?
The fabric is water and air permeable, so it is not fully waterproof and will allow light rain to pass through rather than shed like a coated canopy.

How should I measure for a custom fit?
Measure from D-ring to D-ring at the mounting points you plan to use and allow at least 0.5 ft gap between D-rings and poles; adjust 1 to 1.5 ft per side if needed for tensioning.

Will it reduce temperature effectively?
Yes, in typical use the sail can reduce temperatures by about 15 degrees beneath the shade compared with unshaded areas.