ShadeMart 7 ft x 21 ft Green Rectangle Sun Shade Sail - UPF50

In this review of the ShadeMart 7 ft x 21 ft Green Sun Shade Sail, the bottom line is simple: it is a practical, heavy-duty rectangle sail for homeowners who need reliable sun protection without full waterproofing. The reviewer found the woven HDPE fabric and stainless steel corner D rings make this sail feel robust and long lasting, while the water permeable design and UPF50 shading dramatically reduce heat. It suits patios, carports or poolside areas where airflow and UV blockage matter more than rainproof coverage.

Key Features

• Woven HDPE fabric: The high density polyethylene weave provides a sturdy, tear-resistant canopy that stands up to frequent outdoor use.
• Stainless steel D rings: Heavy duty stainless steel corner rings attached to white webbing make secure mounting and repeated rigging straightforward.
• Water permeable design: Breathable fabric allows water and air to pass through, preventing pooling and reducing wind stress during storms.
• UPF50 sun protection: Blocks up to 95% of harmful UV rays, helping lower temperatures under the sail by a noticeable margin.
• Custom size options: Multiple sizes are available so buyers can order a sail closer to their venue dimensions when a standard fit wont do.
• Rectangle styling: The simple rectangular shape integrates easily with patios, pergolas and carports for a clean aesthetic.

Who It's For

This sail is best for homeowners and renters who need dependable sun protection for outdoor living spaces like patios, pool areas, carports or pergolas and who prefer airflow rather than a waterproof canopy. It will appeal to people who value durability and easy attachment to posts, walls or trees using proper hardware kits.

It may be less suitable for buyers who need a fully waterproof cover for prolonged rain protection or for those who require a precisely rigid rectangle without any slight measurement variation from manual cutting.

Pros & Cons

Pros

• Durable woven HDPE construction stands up well to sun exposure and abrasive outdoor conditions.
• Effectively reduces heat and blocks most UV rays thanks to the UPF50 rating.
• Stainless steel D rings and heavy webbing give confidence when mounting and re-tensioning the sail.
• Breathable, water permeable fabric prevents pooling and eases wind load.

Cons

• Not waterproof, so it will not keep out heavy rain; water will pass through the fabric.
• Size and shape can vary slightly due to manual measurement and cutting, so exact rectangle perfection is not guaranteed.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	7 ft x 21 ft
Material	Woven HDPE (high density polyethylene)
Corner hardware	Stainless steel D rings with heavy duty white webbing
Water resistance	Water permeable (not waterproof)
Sun protection	UPF50, blocks up to 95% UV

Our Verdict

The ShadeMart 7 ft x 21 ft Green Rectangle Sun Shade Sail is a sensible value for anyone needing robust sun and heat reduction in outdoor spaces without requiring rainproofing. Its durable HDPE fabric, stainless steel corners and breathable design make it a reliable choice for patios, pools and carports, provided buyers measure carefully and accept minor manual size variations.

Frequently Asked Questions

Is this shade sail waterproof?
No, the fabric is water permeable and breathable; it will allow water to pass through rather than provide waterproof coverage.

How much UV protection does it offer?
The material is rated UPF50 and can block up to approximately 95% of harmful UV rays.

Can it be attached to trees, posts or walls?
Yes, with appropriate hardware kits the stainless steel D rings and webbing allow attachment to poles, trees, walls or roofs.