In the heatwave era, high summer temperatures are becoming the norm.
Outdoor activities now face new challenges: intense sunlight, body heat accumulation, and unbreathable clothing.
But every sports enthusiast still chooses to embrace the sun
on the court, on the green, or on mountain trails.
As we enjoy the outdoors, our bodies demand more comfort.
Infinity Kelvin, derived from i2Cool’s core patented electricity-free cooling technology.
creates a new generation of functional fabrics with continuous heat-release capabilities —
redefining how we dress in summer.
Founded by City University of Hong Kong’s School of Energy and Environment, specializing in electricity-free cooling technology.
Passive radiative cooling research published in top journals such as Science and Nature Communications, with multiple domestic and international patents.
This natural wisdom inspired i2Cool’s R&D team to delve into radiative cooling technology — combining high solar reflectivity with enhanced mid-infrared emissivity to effectively release heat into outer space, which approaches absolute zero. This achieves truly zero-energy cooling.
As one of the first selected projects in Hong Kong's $100 milion "Research, Academic and Industry Sectors One-plus Scheme (RAlSe+)", this core technology is rapidly expanding its applications.
i2Cool has built a product line of coatings, films, membranes, tiles, and textiles — applied across architecture, industry, and everyday protection.
Textiles are a key focus, integrating electricity-free cooling into everyday apparel for lasting, comfortable temperature relief.
Weaving Core Technology into Fibers
Delivers long-lasting, skin-level cooling
In the Era of Heatwaves
Safeguards the Body's Comfort
Technology as the foundation comfort in a warming world.
Fabric as connection redefining how clothing feels.
Sustainability as principle long-term cooling, made.
INFINITY KELVIN
Defining a New Temperature for Wear
Recyclable and Sustainable
No electricity, no energy use, zero burden.
Let clothing be a low-carbon way of life.
What you wear reflects your future mindset. We encourage choosing low-carbon, eco-friendly, tech-functional daily wear — so every outfit lightens the load on the planet.
Use materials to reduce environmental costs.
Sustainability starts with fabric choice. We encourage using biodegradable, low-impact raw materials to reduce resource consumption from the start, making every step of production more responsible and sustainable.
Provide a smarter cooling solution.
Cooling methods should be reimagined. We advocate fabric technology that helps the body release heat naturally to reduce reliance on energy-intensive air conditioning — making every outfit a smarter response to heat.
