9ft x 20ft Black Sun Shade Sail Rectangle - Breathable UV Protection

In this review the ShadeMart 9' x 20' rectangle sun shade sail is judged as a practical, budget-friendly solution for anyone wanting cooler outdoor spaces without building permanent structures. The biggest reason to buy is its combination of durable woven HDPE fabric and stainless steel corner D rings, which deliver reliable shade and easy anchoring; customers repeatedly note the material strength and temperature reduction as standouts. This review focuses on how it performs as a patio, carport or pool-area cover and where its water-permeable design matters most.

Key Features

• Woven HDPE fabric: provides a durable, tear-resistant surface that blocks up to 95% of harmful UV rays while remaining breathable.
• Stainless steel D rings: heavy-duty hardware at each corner is stitched to white webbing for secure attachment to posts, walls or trees.
• Water-permeable construction: allows rainwater and air to pass through so it does not pond and reduces wind load in variable weather.
• Temperature reduction: the shade cloth can lower ambient temperatures by roughly 10 to 15 degrees in direct sun, improving comfort in patios and carports.
• Custom size options: a range of custom sizes is available so you can choose a sail that fits your venue layout when measured accurately.
• Decorative rectangle styling: a clean rectangular shape and multiple colors make it useful as both shelter and a visual upgrade to outdoor spaces.

Who It's For

The ShadeMart rectangle sail is best for homeowners and renters who need a quick, affordable way to add shade over patios, pergolas, carports, pool equipment or small yard sections. Installers who want a breathable, UV-blocking cover that does not trap water will appreciate the fabric and corner hardware.

People who need fully waterproof coverage or a rigid, permanent canopy should look elsewhere; this style is explicitly not waterproof and functions as a ventilated shade cloth rather than a rainproof roof.

Pros & Cons

Pros

• High-quality woven HDPE material that customers report feels strong and well-stitched.
• Stainless steel D rings and reinforced webbing make anchor points secure and easy to mount.
• Effective at reducing temperature and providing comfortable shaded areas, noted as good value by buyers.
• Breathable, water-permeable design prevents water pooling and improves airflow under the sail.

Cons

• Not waterproof, so it will not keep an area dry during heavy rain.
• Manual sizing can introduce small measurement variations, so careful measuring is required for custom orders.

Specifications

Our Verdict

The ShadeMart 9' x 20' rectangle shade sail is a solid, cost-effective choice for anyone wanting reliable UV protection and improved outdoor comfort without building permanent structures. Its durable HDPE fabric, reinforced corners, and breathable design make it especially good for patios, carports and pool-area coverage; just remember it is not waterproof and requires accurate measuring for custom fits, which keeps expectations clear and value high.

Frequently Asked Questions

Is this sail waterproof?
No. The fabric is water-permeable and breathable, designed to let water pass through rather than provide rainproof coverage.

What hardware is used at the corners?
Each corner has a stainless steel D ring attached to heavy duty white webbing for secure anchoring.

Will it reduce temperature under the sail?
Yes; the woven HDPE material blocks up to 95% of UV and typically lowers ambient temperatures by about 10 to 15 degrees in direct sun.