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About KELVIN
We build the cooling that removes the brake°
KELVIN makes premium in-race neck cooling for endurance athletes — a stick-on element you snap to activate exactly when the race gets hard.
We started KELVIN because the second half of every hot race is where the ceiling lives. Cooling the neck lowers the heat signal to your brain and delays central fatigue, so you keep pushing at the same effort. We're a small team of endurance athletes and engineers building it in the open.
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Proof, not hype
Every claim is grounded in time-trial data, not marketing.
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Built with athletes
First-wave Hyrox and endurance athletes shape the product.
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On demand
Snap-to-activate cooling, exactly when the race is won or lost.
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