ColourTree 21ft x 21ft x 21ft Blue Triangle Sun Shade Sail - Heavy

In this review of the ColourTree 21' x 21' x 21' blue triangle sun shade sail, the bottom line is simple: this is a durable, commercial-grade shade sail for anyone needing reliable sun protection over patios, pools or carports. The standout reason to buy is the use of 190 GSM 100% virgin HDPE with a UV stabilized compound, which the reviewer found translates to noticeably stronger fabric and better color retention compared with lesser recycled sails. Installation requires separate hardware, but once mounted the sail reduces light and heat while remaining breathable.

Key Features

• 190 GSM virgin HDPE: Thick, non-recycled fabric gives a robust feel and resists tearing during heavy use and harsh weather.
• UV stabilized compound: Laboratory-tested material is treated to slow fading and drying out, helping the sail stay intact longer under sun exposure.
• 95% UV blockage: Blocks the majority of harmful UV and significantly lowers temperatures under the sail for more comfortable outdoor use.
• Breathable woven fabric: Allows air and water to pass through to avoid pooling and reduce wind stress, useful over pools and patios.
• Reinforced edges and stainless steel D-rings: Double layered stitched seams and heavy stitching at corners keep the sail neat and make attachment points durable.
• Custom made to order: Each custom size sail is produced in 3-7 business days and comes with a 3 year limited warranty.

Who It's For

This sun shade sail is best for homeowners and small businesses who want a sturdy, long-lasting shade solution for patios, balconies, pool areas or carports and who value durability and UV protection over the lowest price. It suits people who can provide solid anchor points such as poles, trees, or building fixings and who will buy proper hardware separately.

It may not be the first choice for someone who needs a temporary or very cheap seasonal cover, or for buyers unwilling to source and install compatible shade sail hardware; ropes and inferior fasteners are not recommended and will shorten life and performance.

Pros & Cons

Pros

• High quality 190 GSM virgin HDPE material feels durable and held up well in heavy weather tests reported by owners.
• Effective at blocking UV and noticeably reduces temperature in the shaded area.
• Breathable weave prevents water pooling and reduces wind strain compared with solid tarps.
• Stainless steel D-rings and reinforced seams give a secure attachment and longer edge life.

Cons

• Installation hardware is sold separately, and using incorrect ropes can lead to premature failure.
• Size impressions are mixed among buyers, so careful measuring is required before ordering a custom size.

Specifications

Product type	Triangle sun shade sail
Size	21' x 21' x 21'
Material	190 GSM 100% virgin HDPE
UV protection	Approximately 95% UV blockage
Edges and fittings	Double layered stitched seams with stainless steel D-rings
Weather resistance	UV stabilized compound; breathable, water-permeable
Warranty	3 year limited warranty

Our Verdict

The ColourTree 21' triangle shade sail is a compelling choice for anyone wanting a heavy duty, long-lasting shade solution that truly reduces heat and sun exposure. Its 190 GSM virgin HDPE and reinforced construction make it good value for outdoor spaces where a robust cover is needed, provided buyers plan to purchase compatible hardware and measure carefully before ordering.

Frequently Asked Questions

Does this sail block most UV?
Yes, the fabric blocks about 95% of harmful UV and helps lower temperatures beneath the sail.

Is hardware included?
No, installation hardware kits are sold separately and correct cables or kits are recommended for best results.

How long does a custom size take?
Custom size sun shade sails are made in 3-7 business days and the product includes a 3 year limited warranty.