In a nutshell 💡
Jadecool technology incorporates jade mineral microcrystals directly into the fabric. It takes just three steps to activate it: wet, wring out, shake. The result: a cooling sensation of up to 15°C, lasting several hours, without chemicals and without feeling soaked. A reliable technical solution for sports, outdoor work, and everyday summer life.
When the heat takes over, your gear makes all the difference
35°C on the thermometer. The asphalt radiates heat, the T-shirt sticks to your skin, and every movement becomes an effort. Whether you’ve been on a construction site since dawn, out on a bike ride, or simply taking the kids to the park, the heatwave sets the pace. And traditional solutions quickly reveal their limitations: bulky fans, chemical sprays, and soggy, clinging clothes.
At G-Heat, field engineers specializing in thermoregulation, we’ve integrated Jadecool technology into our summer line. A textile innovation that harnesses a simple physical principle—water evaporation—boosted by jade’s natural thermoregulatory properties. The result: immediate, long-lasting coolness with no restrictions on use.
In this guide, you’ll discover the exact mechanism behind Jadecool technology, its measurable benefits in the field, the G-Heat products that feature it, and how to choose the right item for your activity.
Jadecool: the principle of active cooling explained simply
The Role of Jade Microcrystals in Textile Fibers
Jade is a mineral stone that feels naturally cool to the touch. When reduced to mineral microcrystals and woven directly into the fiber, it acts as a thermal conductor: it absorbs heat from the skin and transfers it to the outside of the fabric. It’s like an ice cube placed on the skin, but in a continuous, textile form.
It is the natural thermoregulatory properties of jade that make this process effective, without requiring any chemical additives. According to research by the French Institute of Textiles and Clothing, incorporating jade nanoparticles into synthetic fibers measurably improves the thermal comfort and heat dissipation of technical textiles.
Controlled evaporation: physics at the service of comfort
When you moisten the fabric, the water retained in the fibers evaporates slowly upon contact with the ambient air. This evaporation absorbs heat from the body and the environment. Jade prolongs and stabilizes this phenomenon without soaking the fabric.
Cooling without chemicals
No gel, no spray, no chemical reaction. Just water, technical fabric, and physics. The garment remains infinitely rechargeable simply by re-moistening it. This is what sets Jadecool apart from traditional solutions: a reliable, durable, and clean product.
See also: How does the human body regulate its temperature?
“The idea isn’t to artificially overheat or cool the body, but to precisely compensate for what the environment takes away so that it can continue to function normally.”
— Gwenaël Fournet, Product Expert at G-Heat
How to activate Jadecool technology in 3 steps
Activating a Jadecool accessory or garment is intentionally simple. Three steps, less than two minutes, and the cooling effect kicks in.
- Wet the fabric under cold water or by immersing it until the fibers are saturated.
- Wring firmly to remove excess water and avoid a soaked feeling.
- Shake the accessory to activate the microcrystals and distribute the moisture.
Step 1: Wet the garment
Submerge the garment in cold water or run it under the tap. A few seconds are enough to saturate the fibers. This step is essential for the rest of the process: without water, there is no evaporation, and no cooling effect.
Step 2: Wring out to remove excess water
Squeeze the fabric firmly between your hands. Goal: remove free water while retaining the water held by the fibers. This step prevents the unpleasant “wet T-shirt” effect and ensures immediate thermal comfort.
Step 3: Shake to activate the cooling effect
A few vigorous shakes distribute the moisture throughout the jade microcrystals and trigger active evaporation. The garment is ready to wear: put it on, and the cooling sensation sets in within seconds.
💡 Practical tip: carry a small bottle of water in your backpack or bike bag. Reactivating the garment during your activity takes less than a minute and keeps you cool all day long.
The tangible benefits of Jadecool in real-world use
A 15°C drop in perceived temperature
On the skin, the cooling sensation is equivalent to an environment with a perceived temperature of 18°C, even when the outdoor thermometer reads 33–35°C. This measurable drop of up to 15°C makes a world of difference during a full day of physical activity or sun exposure.
Several hours of cooling per activation
Depending on ambient humidity and the intensity of your activity, the cooling effect lasts several hours per activation. After that, simply re-wetting the fabric restarts the cycle, indefinitely.
A fabric that stays dry and comfortable
Unlike traditional wet towels or soaked T-shirts, Jadecool avoids the soggy feeling. The fabric remains comfortable, doesn’t weigh you down, and doesn’t stick to your skin. You retain your freedom of movement, whether you’re out running, cycling, or on a construction site.
⚙️ The technology explained: Jadecool’s effectiveness depends on air circulation around the fabric. The more you move, the more dry air comes into contact with the damp fibers, the faster evaporation occurs, and the more pronounced the cooling sensation becomes. It’s the exact opposite of a static air conditioner: Jadecool activates with you.
Learn more: Cooling products: how they work (and why it changes everything)
Comparison: Jadecool vs. other cooling solutions
To compare Jadecool with alternatives on the market, here is a summary table based on G-Heat field feedback.
| Criteria | Jadecool | Chemical sprays | Classic cooling towel | Portable fan |
|---|---|---|---|---|
| Perceived cooling | Up to 15°C | 2 to 5°C | 5 to 8°C | 2 to 4°C |
| Effect duration | Several hours | 15 to 30 min | 30 to 60 min | Depends on battery |
| Chemical products | None | Yes | Variable | None |
| Wet effect | No | No | Yes | No |
| Reusable | Unlimited | Limited | Yes | Yes (rechargeable) |
Which G-Heat products feature Jadecool technology?
The G-Heat cooling line applies Jadecool technology to a variety of product types, each designed for specific uses: sports, work, leisure, and everyday summer wear.
UV-protective T-shirts for sports and leisure
Designed for runners, cyclists, hikers, and outdoor enthusiasts, our JadeCool men’s cooling UV-protective T-shirt and women’s cooling UV-protective T-shirt feature UPF 50+ sun protection and Jadecool technology. Technical, fitted cut; quick-drying; ideal for long outings in the sun.
Long-sleeve T-shirt for prolonged sun exposure
For high-exposure activities (cycling, hiking, construction work in direct sunlight), our men’s cooling long-sleeve UV-protective T-shirt covers the forearms with the same JadeCool technology. Comprehensive protection that eliminates the need to layer short-sleeved clothing with sunscreen.
Cooling neckband for the nape without wetting the skin
The JadeCool cooling neckband targets the cervical area, where the carotid arteries run: cooling the blood at the source indirectly cools the entire body. A unique feature of this item: it activates in seconds without wetting the skin, ideal for situations where the fabric cannot get soaked (office, city, evening events).
G-Heat Cooling Towel
The JadeCool cooling towel rounds out the line: a tool for immediate recovery after exercise, to be placed on the neck, forehead, or shoulders. Activates in 15 seconds, cools to 15°C on the surface, and is UPF 50+ certified for sun protection. Compact size, fits easily in a backpack.
To explore the full range, see our cooling t-shirts, cooling neck wraps, and cooling towels.
⚠️ Important note: Never wash JadeCool fabrics with fabric softeners or bleach. These products clog the fibers and neutralize the cooling effect. Wash at 30°C maximum, air dry, do not tumble dry.
How to choose the right JadeCool garment for your needs
Criterion #1: the intensity of your activity
For sustained exertion (running, cycling, physical construction work), opt for technical, close-fitting styles that maximize contact between the fabric and the skin. It is this contact that optimizes heat transfer. For leisure or everyday use, looser fits remain comfortable and effective.
Criterion #2: Sun exposure
If you spend several hours outdoors, opt for models with built-in UPF 50+ sun protection. Long sleeves are recommended for construction work and outdoor sports in direct sunlight. UV protection is then combined with cooling properties for complete protection against the sun’s harmful effects.
Criterion #3: the body area to target
Head and neck: JadeCool neckband or PolyCool cap. Torso and arms: short-sleeve or long-sleeve JadeCool T-shirt. Multi-zone recovery: cooling towel. Choose based on which area gets hot first during your activity. For intensive daily use, plan on having two towels so you can alternate between washing and activating them.
JadeCool in action: three real-life scenarios
3-hour bike ride in 32°C heat
You’re starting your Sunday ride, and the sun is already beating down at 9 a.m. The JadeCool T-shirt, activated before you set off, keeps you cool during the first part of the ride. Break at a water station halfway through: 30 seconds to re-moisten it, and you’re off again feeling refreshed. No heat exhaustion, no forced stops.
A day on the construction site in the middle of summer
On the construction site, the sun has been beating down since 7 a.m. The JadeCool neck gaiter and T-shirt are activated at the start of the day, re-moistened during the 10 a.m. break and after lunch. Result: heat-related fatigue is reduced, and you maintain your alertness and dexterity until the end of the day.
Family outing to the park with the kids
The kids run, play, and sweat. The JadeCool T-shirt keeps them comfortable without any hassle: no chemicals on their skin, just water and technical fabric. Activate it in the morning, then again in the mid-afternoon, and the outing stays enjoyable.
Must-read: Breathable T-shirt vs. cooling T-shirt: which one should you choose for running in the summer?
“In the field, the best gear is the kind you forget you’re wearing. If you stop thinking about the heat, you’re 100% focused on your activity, your family, or your work. »
— Romane Benderradji, Communications Manager at G-Heat
Why choose G-Heat for your cooling gear
Amid a sea of marketing claims, G-Heat stands out thanks to a proven technical approach and recognized field expertise in textile thermoregulation for both summer and winter.
- Recognized thermal expertise: As the French leader in textile thermoregulation, G-Heat designs each product with field engineers who test the components under real-world conditions, not in a closed laboratory.
- Four proven technologies: Jadecool is not just a standalone marketing claim. It is part of a comprehensive ecosystem alongside TechCool, PolyCool, and PhaseCool, each tailored to a specific use.
- A complete range for summer and winter: G-Heat ensures business continuity in all weather conditions, from heating to cooling, from sports to professional use, from everyday wear to intensive use.
- Personalized support: advice on size selection and the best fit for your activity, plus after-sales service provided by a team based in France that you can reach directly.
- Built to last: technical fabrics resistant to repeated washing, jade microcrystals integrated into the fiber (not just on the surface) to preserve the cooling effect throughout the garment’s lifespan.
- Chemical-free: a clean solution, suitable for sensitive skin and children, odorless and hypoallergenic.
“Cooling clothing isn’t a summer gimmick. It’s a tool. Our goal: to ensure the weather is never again a reason to stop before the end of your day.”
— Édouard Castaignet, CEO and co-founder of G-Heat
Conclusion: Turn the heatwave into just another weather condition
JadeCool technology isn’t just a summer fad. It’s a precise technical solution to a real-world problem: maintaining your thermal comfort and performance when the heat sets in for the long haul. Jade mineral microcrystals integrated into the fiber, controlled water evaporation, activation in 3 simple steps: behind the ease of use lies true textile engineering.
Whether you’re an athlete, a construction professional, a parent, or simply someone who enjoys staying cool every day, G-Heat’s JadeCool line offers you a newfound freedom in the face of extreme heat. Discover our cooling apparel and make heat a factor you can control. Whatever the weather. G-Heat, in all weather conditions.
FAQ: Your questions about JadeCool technology
How long does the cooling effect of JadeCool last?
The cooling effect lasts an average of several hours per activation, with a perceived temperature drop of up to 15°C. The duration varies depending on ambient humidity and activity intensity. Simply re-wetting the fabric restarts the cycle indefinitely.
How should I care for a Jadecool garment to maintain its effectiveness?
Machine wash at 30°C maximum, without fabric softener or bleach. Air drying recommended; do not tumble dry. The jade microcrystals remain embedded in the fabric wash after wash, preserving the cooling effect throughout the product’s lifespan.
Is Jadecool technology suitable for intense sports activities?
Yes, especially so. The more you move, the more effective the evaporation and the more pronounced the cooling effect. Running, cycling, hiking, team sports: Jadecool is designed to support physical exertion by limiting body overheating and heat-related fatigue.
Can Jadecool be used on a construction site or in a professional environment?
Absolutely. The G-Heat professional line is designed for construction, industry, and high-exposure trades. It withstands frequent washing, features cuts adapted for wearing PPE, offers built-in UV protection on certain models, and has proven durability in real-world conditions.
Do I need a specific size to get the most out of Jadecool?
No, choose your usual size. Direct contact between the fabric and the skin optimizes the cooling effect: so opt for a fitted cut for intense activities, and your standard size for leisure or everyday use.
Does Jadecool contain any chemicals or allergens?
No. The technology relies solely on natural jade microcrystals integrated into the fabric and on the physical principle of water evaporation. No gels, sprays, or chemicals are used: a solution suitable for sensitive skin and children.
Can Jadecool clothing be worn as a base layer, or does it need to be in direct contact with the skin?
For maximum effectiveness, Jadecool clothing must be in direct contact with the skin. It is this contact that allows for optimal heat transfer between the skin and the moisture-activated jade microcrystals.
Sources and references
[1] “Effect of jade nanoparticle content on the comfort performance of knitwear”, French Institute of Textiles and Clothing (IFTH)
[2] “Climate change, heat, and health”, World Health Organization (WHO)
[3] “Paris 2024 Olympics: Heat wave hits sports”, French National Institute of Health and Medical Research (Inserm)
[4] “Heat Waves and Extreme Heat: Preventing Risks”, Santé publique France
[5] “Working in the Heat: Health Effects and Accidents”, French National Research and Safety Institute (INRS)
[6] “Dehydration and Heat Stroke: Symptoms, Causes, and Treatments”, Vidal
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