ShadeMart 20 ft x 23 ft Red Rectangle Sun Shade Sail - Cool, UV

In this review of the ShadeMart 20' x 23' red rectangle sun shade sail, the bottom line is simple: it is a practical, heavy duty fabric sail for homeowners and small businesses who need large-area UV protection without trapping heat. The reviewer found the woven HDPE material and stainless steel corner D rings deliver solid durability and easy attachment options, while the breathable, water-permeable design keeps covered areas cooler. If you want a large, customizable rectangle shade that reduces sunlight and heat, this sail is worth considering.

Key Features

• Woven HDPE fabric: the high density polyethylene construction provides a durable, tear-resistant canopy that blocks up to 95% of harmful UV rays.
• Stainless steel D rings: heavy duty corner rings attached to white webbing make mounting to posts, walls or trees reliable and long lasting.
• Breathable and water permeable: the sail allows air and water to pass through, reducing wind load and preventing puddles while improving comfort underneath.
• Heat reduction: the fabric significantly lowers temperature in shaded areas, often making patios and carports noticeably cooler.
• Custom sizing available: a range of custom sizes lets buyers match odd or large spaces when they measure the venue accurately before ordering.
• Decorative rectangle shape: the simple shape and bold red color integrate with many outdoor settings while providing practical coverage.

Who It's For

This shade sail suits homeowners with patios, carports, pergolas or poolside areas who want a cost-effective way to reduce sunlight and UV exposure over a large rectangular area. It is also a good choice for renters or property owners who prefer a removable, nonpermanent shading solution that attaches to posts, walls, trees or roofs with the right hardware.

People looking for a fully waterproof canopy, an airtight shelter, or a product that comes with a complete mounting kit out of the box should look elsewhere; this model is specifically a breathable, water-permeable HDPE sail and buyers should plan hardware separately and measure carefully to get the correct custom size.

Pros & Cons

Pros

• Durable woven HDPE fabric that blocks a high percentage of UV and holds up in windy conditions.
• Stainless steel D rings and heavy webbing provide secure attachment points and long service life.
• Breathable, water-permeable design prevents pooling and improves airflow beneath the sail.
• Available in custom sizes to fit a variety of outdoor spaces.

Cons

• Not waterproof, so it will not keep heavy rain from passing through and does not create a dry shelter.
• Requires separate hardware and careful measurement; size variance from manual measurement has been reported by some customers.

Specifications

Brand	ShadeMart
Shape	Rectangle
Size	20' x 23'
Material	Woven HDPE (High Density Polyethylene)
Corner fittings	Stainless steel D rings with heavy white webbing
Functionality	Water permeable, breathable, UV resistant (blocks up to 95% UV)
Customization	Custom sizes available; measure venue before ordering

Our Verdict

The ShadeMart 20' x 23' red rectangle shade sail is a solid choice for anyone who needs large-area UV protection with good airflow and durable fittings. It is good value for patios, carports and pool areas where cooling and sun protection matter more than full waterproofing, and its customizable sizing and heavy duty construction make it a practical long-term shading solution.

Frequently Asked Questions

Is this shade sail waterproof?
This style is not waterproof; it is water permeable and designed to allow water to pass through rather than form a waterproof barrier.

Will it block sunlight and heat?
Yes, the woven HDPE fabric blocks up to 95% of harmful UV rays and typically lowers surface temperatures in shaded areas.

Does it include mounting hardware?
No, mounting hardware is not included; customers should purchase appropriate hardware kits and measure installation points accurately before fitting the sail.