Turquoise 12ft x 21ft Sun Shade Sail UPF50 Rectangle - Breathable

Our review of the ShadeMart 12' x 21' rectangle sun shade sail finds it best suited to homeowners and small businesses who want a durable, breathable canopy that reduces heat and blocks UV without trapping rain. The sail's woven HDPE fabric, stainless steel corner D rings and heavy duty webbing deliver a robust, low-maintenance solution for patios, carports and poolside cover. While not waterproof, it is water permeable and significantly lowers temperature under the fabric, making it a practical choice for sun protection and airflow in warm climates.

Key Features

• MATERIAL: Woven HDPE fabric provides a tough, fade-resistant surface that stands up to sun exposure and general outdoor wear.
• UV PROTECTION: UPF50-rated weave blocks up to 95% of harmful UV rays, helping to noticeably reduce temperatures beneath the sail.
• BREATHABILITY: The water permeable construction allows air and water to pass through the fabric, avoiding pooling and improving ventilation.
• HARDWARE: Stainless steel corner D rings attached to heavy duty white webbing make anchoring secure and compatible with common mounting kits.
• CUSTOM SIZE OPTIONS: Available in multiple sizes with customization to fit irregular spaces when measured accurately before ordering.
• STYLING: Rectangle shape and vibrant turquoise color add a decorative, modern element to patios, pergolas and carports.

Who It's For

This shade sail is ideal for homeowners, renters with permission to install anchors, and small businesses seeking a UV-blocking canopy that improves comfort without a rigid frame. People who prioritize airflow and sun protection for patios, pool areas, carports or outdoor dining will find the sail effective and simple to maintain.

It is not for buyers who need a fully waterproof awning or a perfectly rigid, load-bearing structure; because the fabric is water permeable and measurements can vary slightly, sites requiring exact fit or rain shedding should consider alternative solutions.

Pros & Cons

Pros

• High UPF50 protection that blocks most harmful sun rays and cools the covered area.
• Durable HDPE weave and stainless steel D rings offer long-lasting, low-maintenance performance.
• Breathable, water permeable design prevents water pooling and improves airflow under the canopy.
• Custom sizing and attractive turquoise styling make it adaptable for many outdoor aesthetics.

Cons

• Not waterproof, so it will not keep an area dry during heavy rain.
• Some customers report size and shape can vary slightly due to manual measurements, so careful measuring is required.

Specifications

Our Verdict

The ShadeMart 12' x 21' turquoise rectangle shade sail is a smart value for anyone needing reliable sun protection with good airflow and durable construction. It excels where cooling and UV blocking matter most, and with correct measuring and suitable mounting hardware it is an attractive, long-lasting canopy for patios, pools and carports.

Frequently Asked Questions

Is this shade sail waterproof?
Answer. No, the fabric is water permeable and designed to allow water to pass through rather than shed rain.

Will it block sunlight and heat?
Answer. Yes, the UPF50-rated HDPE weave blocks up to 95% of UV rays and can lower temperatures under the sail by about 10 to 15 degrees.

Can I customize the size?
Answer. Yes, ShadeMart offers custom sizes; measure your installation area accurately because manual measurements may vary slightly.