Sun Shade Sail 17ftx21ft Blue Rectangle Canopy - UV Block Shade

In this review the Sun Shade Sail 17'x21' Blue Rectangle Canopy is evaluated as a budget-friendly option for homeowners who need reliable sun protection over patios, pergolas or play areas. The single biggest reason to buy is its combination of breathability and high UV blocking: made from 185 GSM HDPE material, it claims up to 98% UV protection while still allowing air to pass through so outdoor spaces stay cooler without trapping heat.

Key Features

• Premium Fabric: Constructed from 185 GSM HDPE with double layers webbing for a durable, non-toxic fabric that is safer for families.
• High UV Protection: The material blocks up to 98% of harmful UV rays, reducing sun exposure and helping keep shaded areas cooler.
• Breathable Design: The weave permits cooling breezes and light to pass through, preventing heat buildup and allowing rain to drain instead of pooling.
• Reinforced Corners: Each corner has a heavy stitched seam and a stainless steel D-ring for secure anchoring and longer wear under tension.
• Simple Installation: Ships with four stainless steel D-rings and four 1.5 m ropes so one person can install the sail quickly without special tools.

Who It's For

The sail is best for homeowners and renters seeking affordable, effective shade over patios, gardens, playgrounds or outdoor seating areas; the breathable HDPE fabric makes it a good match for warm climates where airflow is important. It also fits DIYers who want a quick install since the kit includes D-rings and ropes and does not require professional assembly.

Those who need a fully waterproof cover or long-term, heavy-duty industrial protection should look elsewhere, as the fabric is designed to let water pass through and is not a substitute for solid roofing or a waterproof canopy.

Pros & Cons

Pros

• High sun protection with material rated to block up to 98% of UV rays, which helps reduce heat and sunburn risk.
• Breathable fabric keeps air flowing so shaded areas remain airy and comfortable.
• Reinforced seams and stainless steel D-rings improve durability and make mounting straightforward.
• Value oriented: customers often report good quality for the price and easy installation.

Cons

• Not waterproof; rain will pass through the fabric and it can tear under prolonged heavy wear according to some user reports.
• Durability is mixed in customer feedback, with a few reports of tearing after several months.

Specifications

Product Type	Rectangle sun shade sail
Size	17'x21'
Material	185 GSM HDPE with double layers webbing
UV Protection	Up to 98%
Corners	Stainless steel D-ring on each corner, strong stitched seam
Included Hardware	4 D-rings and 4 ropes (1.5 m each)

Our Verdict

The 17'x21' Sun Shade Sail is a practical, cost-effective choice for anyone wanting breathable, high UV protection for patios and gardens. It delivers strong sun blocking and easy DIY installation, making it good value for most residential uses, though buyers looking for waterproofing or absolute long-term heavy-duty performance should consider sturdier alternatives.

Frequently Asked Questions

Is the sail waterproof?
The fabric is breathable and allows rain to pass through, so it is not waterproof and will not prevent water from dripping.

What hardware is included?
The sail includes four stainless steel D-rings sewn into the corners and four ropes of approximately 1.5 m for mounting.

How much UV protection does it provide?
Manufactured from 185 GSM HDPE, the sail is designed to block up to 98% of harmful UV rays.