Founder
Claes Mårtén
Once I understood how much temperature has shaped what humans can do, I could not stop reading about it.
We have spent trillions of dollars on cooling. Phones, laptops, cars, nuclear plants, data halls. We cool everything we build. Then we forgot that the body follows the same thermodynamics, and that nobody was building for it.
So I started building for it.
01 WHY IT EXISTS
Why KYLA exists.
Most athletes train hard. Almost none of them know that part of what ends the session is temperature.
Heat builds faster than the body can get rid of it. You pay for it at the end, in the efforts you came to do.
Between the last effort and the next is the only moment you can do anything about it. KYLA was built for that moment.
Machines have a cooling industry. Humans do not. We are building it.
Your limit has not always been you. It has been the heat.
02 WHAT IT IS
What it is.
A pair of handles you hold between efforts.
Pre-cooled in the fridge. Sized to fit, light enough to carry, built to be used across an entire session.
The palms are one of the body’s own built-in heat exits. Cooling them gives heat somewhere to go.
The body does the rest.
03 THE MOMENT
Not rest after training. Rest inside it.
Athletes have never had a tool built for the rest inside a session. The result is an athlete who arrives at the next effort with less heat and more control.
04 WHERE WE START
Where we start. Not where we end.
KYLA Performance is the first product.
Behind it sits a longer ambition.
Temperature regulation is a part of human health that few people think about. We start with athletes, in the moment between efforts, because that is where the effect is most measurable today.
Pre-launch athletes are already using it.
It is not where we stop.
05 HOW IT IS MADE
Designed in Sweden. Made in Germany.
Swedish scientists for the underlying physics. Close production partners in Turkey for specialised parts. Final assembly in Germany, for the precision it needs.
More than forty prototypes. Fifteen factories tested for parts most people will never see. Almost every component inside is made only for this product. From the metals and polymers to the patent-pending internal system at the core, most are being used in ways nobody had tried before. Each behaves differently under heat and cold, and each demanded its own development.
Kyla is the Swedish word for cold. It is not a metaphor, and it is the one part of this that did not have to be engineered.
Elsewhere
- PressCoverage, assets and contacts.
- AthletesSeventy elite athletes, before launch.
- Published researchThe published research.
- ContactQuestions, partnerships, press.
OVER FORTY PROTOTYPES. ONE ANSWER.
I build hard things. Software, hardware, companies. Some worked. Some failed. I learned to treat every failure as one step closer.
After my last venture ended, I went back to my body. Running, outside, in the Swedish winter. One cold morning I remembered a study on how the body releases heat through the palms. I cut open my gloves so my palms could meet the air. It worked just enough to keep me asking: if this is real, where is the tool?
The tools I found were not effective enough. So I took on another hard task. Thermodynamics, physics, and a product that actually moves heat out of the body.
For twelve months I got the same result every other cooling product gets. The same effect, the same limit, prototype after prototype. More than forty of them. Then one day a prototype moved several times more heat than anything we had built before, and the result held when we measured it again. That something is now our patent-pending technology, and the reason KYLA exists. The next twelve months went into making it possible to produce.
The first 100 pairs are the Founders Edition. They are never sold. They go to the athletes who help us build it. The First Run is the first public batch. It ships 10 November 2026, to the people who reserve. We launch the way I prototype: small, careful, measured.
Claes Mårtén, Founder.
KYLA Performance™
Full refund anytime before shipment.