ShadeMart 17ft x 23ft Blue Sun Shade Sail UPF50 Rectangle - Heavy Duty

Our review of the ShadeMart 17' x 23' blue sun shade sail finds it best for homeowners and small businesses who want a heavy duty, breathable canopy that reliably cuts heat and UV exposure. The single biggest reason to buy is its combination of woven HDPE fabric and stainless steel D rings, which together deliver durable, long-lasting shade that blocks up to 95% of harmful UV rays while remaining water and air permeable. Installation is straightforward with the right hardware, and the fabric performance is the standout feature in everyday outdoor use.

Key Features

• Woven HDPE fabric: provides a strong, tear-resistant canopy that limits sun penetration while allowing airflow to reduce temperatures noticeably.
• Stainless steel D rings: give solid, corrosion-resistant anchor points that hold well under tension and help the sail stay secure in varied weather.
• Water permeable design: lets rain and air pass through so water does not pool on the sail, reducing wind load and the risk of sagging.
• UPF50 sun protection: blocks up to 95% of harmful UV rays to protect people and surfaces beneath the sail.
• Custom size options: a range of sizes is available so you can match the sail to patios, carports, pergolas or pools with accurate measurements.
• Rectangle styling: a clean geometric look that integrates with many outdoor spaces and serves as decorative shade.

Who It's For

The ShadeMart 17' x 23' rectangle sail is ideal for homeowners who want reliable sun protection over a patio, carport or pool area and don't need a waterproof canopy. It suits DIY installers who can supply appropriate mounting hardware and measure attachment points carefully to ensure proper tension.

It is also a good match for small commercial outdoor seating where UV protection and airflow matter. Those who need a fully waterproof cover, or who cannot install sturdy anchors or distance supports, should look elsewhere for a different style of canopy.

Pros & Cons

Pros

• Durable woven HDPE fabric that customers report as high quality and long lasting.
• Stainless steel D rings and heavy duty webbing for robust anchor points and ease of tensioning.
• Breathable, water permeable design prevents pooling and helps lower temperatures beneath the sail.
• Custom size options and multiple colors make it versatile for many outdoor settings.

Cons

• Not waterproof, so it will not provide full rain protection during storms.
• Size can vary slightly due to manual measurement, so careful measuring is required before ordering.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	17' x 23'
Material	Woven HDPE (high density polyethylene)
D rings	Stainless steel with heavy duty white webbing
Waterproof	No, water permeable and breathable
Sun protection	UPF50, blocks up to 95% UV rays

Our Verdict

The ShadeMart 17' x 23' blue sun shade sail is a practical, value-focused choice for anyone needing breathable, heavy duty sun protection. It excels at lowering temperatures and providing UV defense while remaining durable and easy to tension with proper hardware; just be aware it is not designed to be waterproof. For patios, carports and poolside areas where airflow and sun blocking matter most, it represents a solid purchase.

Frequently Asked Questions

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

What material is the fabric made from?
The fabric is woven HDPE (high density polyethylene) designed for durability and UV blocking.

Can it be attached to trees, poles, or walls?
Yes, with proper hardware kits the sail can be attached to poles, trees, walls, roofs and similar structures.