ShadeMart 9ft x 20ft Blue Sun Shade Sail Rectangle - Breathable UV

In this review the ShadeMart 9' x 20' Blue Sun Shade Sail Rectangle is judged on durability, sun protection and real-world usability; the sail is aimed at homeowners who need a simple, cost-effective canopy for patios, carports or poolside equipment. The single biggest reason to buy is its combination of strong woven HDPE fabric and high quality stainless steel D rings that make installation straightforward and long lasting while blocking up to 95% of harmful UV rays. For anyone wanting a breathable, temperature-reducing cover without a permanent structure, it earns close consideration.

Key Features

• Woven HDPE fabric: The high density polyethylene weave delivers a tough, tear-resistant surface that stands up to routine outdoor wear and sunlight.
• Stainless steel corner D rings: Heavy duty D rings attached to reinforced white webbing provide secure anchor points and resist rusting in wet conditions.
• Water permeable construction: The breathable design allows rain and air to pass through, preventing pooling while keeping the covered area cooler.
• UV protection: Blocks up to 95% of harmful UV rays and can reduce temperatures beneath the canopy by about 10 to 15 degrees, improving outdoor comfort.
• Custom sizing available: A wide selection of sizes means this sail can be tailored to fit patios, carports, pergolas, or odd-shaped yards when measured carefully.
• Decorative rectangle styling: The simple rectangle shape and color options make it easy to integrate as a functional accent in most outdoor designs.

Who It's For

The ShadeMart rectangle shade sail is best for homeowners, renters with outdoor spaces, and small property owners who need a removable, breathable canopy for shade and UV protection. It particularly suits people who want a lower-cost alternative to building a permanent roof for patios, carports or equipment cover.

Those who need a fully waterproof shelter, insulated roofing, or a hard permanent structure should look elsewhere; this model is explicitly water permeable and meant for shade and ventilation rather than total weatherproofing.

Pros & Cons

Pros

• Durable woven HDPE material with strong stitching that customers note holds up well over time.
• Solid stainless steel D rings and heavy webbing make anchors secure and easy to attach to posts or trees.
• Effective at reducing temperature and providing reliable UV protection while remaining breathable.
• Good value compared with building permanent coverage and available in custom sizes.

Cons

• Not waterproof, so it will not prevent water from passing through during rain.
• Manual measurement and cutting can lead to small variations in dimensions, so accurate measuring is important.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	9' x 20'
Material	Woven HDPE (High Density Polyethylene)
Corner hardware	Stainless steel D rings attached to heavy white webbing
Functionality	Water permeable, breathable, UV resistant (up to 95% blockage)

Our Verdict

The ShadeMart 9' x 20' Blue Sun Shade Sail Rectangle is a practical, cost-effective canopy for anyone seeking reliable UV protection and airflow without building permanent structures. Its durable HDPE fabric and stainless corner fittings provide confidence in installation and longevity, making it particularly good value for patios, carports, pool equipment covers and similar outdoor needs-provided you accept that it is not waterproof.

Frequently Asked Questions

Is this shade sail waterproof?
No. The sail is water permeable and breathable by design, so water and air pass through rather than beading off.

Can it be attached to trees or poles?
Yes. With appropriate hardware kits the reinforced D rings allow attachment to poles, trees, walls or roofs.

Does it really reduce temperature?
Customers report noticeable cooling; the fabric blocks up to 95% of UV and typically lowers temperatures beneath the canopy by around 10 to 15 degrees.