ColourTree Custom Size 15ft x 21ft x 25.8ft White Right Triangle Sun

Our review looks at the ColourTree Custom Size right triangle sun shade sail and finds it best for homeowners and small commercial spaces seeking a heavy-duty, breathable canopy that blocks sun and reduces heat. The strongest reason to buy is the fabric: this sail uses 190 GSM 100% virgin HDPE with a UV stabilized compound, which the maker says survived extended UV testing and is more tear- and fade-resistant than recycled alternatives, giving confident protection over patios, pools and carports.

Key Features

• 190 GSM virgin HDPE: Thick, non-recycled material is designed to resist tearing and deterioration compared with recycled fabric under prolonged sun exposure.
• UV stabilized compound: Laboratory testing and treatment reduce fading and drying out so the sail is intended to last longer in outdoor conditions.
• 95% UV blockage: The woven fabric significantly reduces direct UV and lowers radiative heat in shaded areas for more comfortable outdoor use.
• Breathable weave: Air and water pass through freely so rain does not pool and the canopy stays more stable in wet weather.
• Reinforced edges and stainless D-rings: Double-layer stitched seams and heavy corner stitching keep the shape and provide strong anchor points for cable attachments.
• Commercial heavy duty build: Intended for patio, poolside, balcony or carport use where durability and continuous shade are priorities.

Who It's For

This shade sail suits homeowners, pool owners and small commercial operators who want a large custom right triangle canopy that prioritizes material longevity and UV protection. It is a good fit when you need breathable coverage for an outdoor seating area, above-ground pool or car shelter where reduced heat and sun exposure matter.

Those who need a full installation kit should note hardware is sold separately; customers looking for an all-in-one package with ropes and turnbuckles included should look elsewhere or add a compatible kit. Also, buyers who need a very lightweight, temporary sun shade may prefer a thinner, lower-GSM option.

Pros & Cons

Pros

• High-quality 190 GSM virgin HDPE fabric offers strong UV resistance and durability.
• Breathable woven design blocks sunlight while allowing air and water through to prevent pooling.
• Reinforced seams and stainless steel D-rings make for a sturdy attachment and shape retention.

Cons

• Installation hardware is not included and customers must buy proper cables and fittings separately.
• Some users report mixed durability in the field, so performance can vary with local weather and installation quality.

Specifications

Shape	Right triangle
Dimensions	15 ft x 21 ft x 25.8 ft
Material weight	190 GSM
Fabric	100% virgin HDPE (UV stabilized)
UV protection	Up to 95% UV blockage
Hardware	Stainless steel D-rings on each corner (installation kit sold separately)
Warranty	3 years limited

Our Verdict

The ColourTree 15 ft x 21 ft x 25.8 ft right triangle shade sail is a practical choice for people who need substantial, breathable sun protection and value a thicker, virgin HDPE fabric treated for UV stability. It delivers solid shade performance and durable construction for patios, pools and carports, but plan to purchase a quality hardware kit separately to get the best longevity and fit.

Frequently Asked Questions

Does the sail block most UV?
Yes; the woven fabric is rated to block up to 95% of harmful UV, reducing sun exposure and heat beneath the canopy.

Is installation hardware included?
No; D-rings are attached to the sail but cables, turnbuckles and mounting hardware are sold separately and recommended for proper install.

How long is the warranty?
The product includes a 3 year limited warranty under normal weather and usage conditions.