ShadeMart 17ft x 21ft Turquoise Sun Shade Sail - UPF50 Rectangle

In this review of the ShadeMart 17' x 21' Turquoise Sun Shade Sail, the bottom line is simple: this rectangle canopy is aimed at homeowners and DIYers who want durable sun protection for patios, carports, pools or vegetable gardens. The biggest reason to buy is its combination of a woven HDPE fabric that blocks up to 95% of harmful UV rays while remaining water and air permeable, which cools the covered area noticeably without trapping moisture. The review examines material, installation, color and real-world performance to help decide if it fits a specific outdoor space.

Key Features

• Woven HDPE fabric: The high density polyethylene weave provides strong, tear-resistant coverage that blocks up to 95% of UV while staying breathable and water permeable.
• Stainless steel corner D rings: Heavy duty stainless D rings attached to reinforced white webbing give reliable anchor points for long-term outdoor use.
• Temperature reduction: The fabric significantly lowers temperatures under the sail, often by at least 10 to 15 degrees in direct sun, improving comfort for patios and play areas.
• Custom sizing available: A range of custom sizes lets users order a sail tailored to their mounting layout, provided measurements are taken accurately.
• Decorative rectangle shape: The clean rectangle styling and multiple color choices allow the sail to integrate with existing outdoor decor while providing practical shade.
• Multiple attachment options: With the proper hardware kits the sail can be attached to poles, trees, walls or roofs for versatile placement.

Who It's For

This shade sail is for homeowners, gardeners and small business owners who need a cost-effective way to add large-area sun protection that breathes. It suits anyone who prefers a fabric that reduces heat without creating a sealed, waterproof canopy, for example over patios, carports, pergolas, pools or vegetable beds.

Those who need a fully waterproof shelter, or who want a rigid, windproof structure for year-round covered space, should look elsewhere; this sail is designed to be water permeable and will not keep rain out the way a solid canopy or awning would.

Pros & Cons

Pros

• Blocks up to 95% of harmful UV and lowers temperatures for comfortable shaded areas.
• Durable woven HDPE fabric and strong stitching provide good long-term performance and resistance to tearing.
• Stainless steel D rings and reinforced webbing make attachment secure and installation straightforward.
• Custom sizes and several colors allow flexible design choices for many outdoor spaces.

Cons

• Not waterproof, so it will not prevent rain from passing through and is not a substitute for a sealed roof.
• Color and exact dimensions may vary slightly due to manual measurement and fabric variation.

Specifications

Our Verdict

The ShadeMart 17' x 21' Turquoise Sun Shade Sail is a practical, well-constructed option for anyone wanting breathable, high-coverage sun protection that also reduces temperature. It offers strong stitching, stainless steel corners and customization options, making it good value for patios, pools and gardens where water permeability is acceptable and a lightweight, decorative solution is preferred.

Frequently Asked Questions

Is this sail waterproof?
No, the fabric is water permeable and breathable so rain will pass through rather than be shed like a waterproof canopy.

Can I install it on trees or posts?
Yes, with appropriate hardware kits the sail can be attached to poles, trees, walls or roofs for flexible installation.

Will the color and size be exact?
Colors and manual measurements can vary slightly, but the fabric area is maintained and ShadeMart offers custom sizing to match your measurements.