ShadeMart 11 ft x 17 ft Black Sun Shade Sail UPF50 Rectangle - Cool

In this review the ShadeMart 11 ft x 17 ft rectangle sun shade sail is examined for homeowners and outdoor spaces that need durable, breathable UV protection. The bottom line: this sail is best for patios, carports and poolside areas where reducing heat and blocking sunlight are priorities, because its woven HDPE fabric delivers UPF50 sun protection while remaining water permeable and breathable. The reviewer found it offers substantial temperature reduction and tough hardware for repeated outdoor use.

Key Features

• MATERIAL: Woven HDPE fabric provides a robust, lightweight barrier that blocks up to 95% of harmful UV rays while resisting tearing.
• UV PROTECTION: The sail is rated UPF50 and noticeably lowers ambient temperature, making it useful for comfort on hot days.
• BREATHABILITY: Water permeable design allows rain and air to pass through so the sail does not pool water and vents heat buildup.
• HARDWARE: Stainless steel corner D rings attached to heavy duty white webbing give secure anchor points suitable for permanent or seasonal installations.
• CUSTOM SIZING: Multiple custom sizes are available to fit patios, pergolas or carports, but buyers should measure carefully since manual measurements can vary.
• STYLING: Rectangle shape and color options let the sail double as a practical shade solution and a decorative outdoor element.

Who It's For

Homeowners, renters with permission to install shade hardware, and small business owners with outdoor seating will benefit from this shade sail because it reduces sun exposure and lowers temperatures by several degrees while allowing airflow. It is especially suited to patios, carports, pergolas, pool areas and yards where a semi-permanent breathable cover is desired.

Those who need a fully waterproof canopy, an exact laser-cut rectangle, or a solution that requires no mounting points should look elsewhere; this product is water permeable and may show small variances from perfect geometric dimensions due to manual cutting and finishing.

Pros & Cons

Pros

• High UPF50 sun protection that blocks most UV rays and noticeably cools shaded areas.
• Durable woven HDPE construction and stainless steel D rings provide long-term outdoor performance.
• Breathable, water permeable fabric prevents pooling and encourages airflow.
• Available in custom sizes and colors to suit different installation needs and styles.

Cons

• Not waterproof, so it will not keep out heavy rain and is intended for shade rather than full weather protection.
• Size and shape can vary slightly due to manual measurements and cutting, so precise fitting requires careful measurement.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	11 ft x 17 ft
Material	Woven HDPE (High Density Polyethylene)
UV Protection	UPF50, blocks up to 95% UV
Hardware	Stainless steel corner D rings with heavy duty webbing
Water Resistance	Water permeable, not waterproof

Our Verdict

The ShadeMart 11 ft x 17 ft rectangle shade sail is a solid, cost-effective option for anyone wanting effective UV protection and cooler outdoor spaces without trapping heat. Its durable HDPE weave and stainless hardware make it a practical long-term shade solution for patios, carports and pool areas, but buyers seeking full rain coverage or perfect dimensional precision should consider alternatives.

Frequently Asked Questions

Is this shade sail waterproof?
The fabric is water permeable and breathable, so it is not waterproof and will allow rain to pass through.

Can it be attached to trees or poles?
Yes, with proper hardware kits the sail can be anchored to poles, trees, walls or roofs; secure attachment points are required.

Does it really reduce temperature?
Yes, customers report a noticeable drop in temperature under the sail thanks to the UPF50 fabric and breathable design.