CoolMitt

09/10/2026

Craig Gile and Rear Adm. (Ret.) Mike Wettlaufer are in Washington, DC this week representing CoolMitt at the Emerging Technologies for Defense Conference & Exhibition, hosted by NDIA and its Emerging Technologies Institute.

The event brings together leaders from government, the defense industry, and academia to look at the technologies that will shape national security, with a focus on systems that can be fielded within the next five years. Heat stress belongs on that list. CoolMitt was built to solve it.

09/08/2026

Every heat mitigation program eventually runs into the same inevitable question: how do you know it’s working?More

Every heat mitigation program eventually runs into the same inevitable question: how do you know it’s working?

09/08/2026

You can't measure your crew's core temperature. But heart rate will tell you what heat is doing to them.

Pick one task they do every day. Check heart rate at that task, same point in every shift. Watch what happens after a cooling break.

Same heat, same work, ten minutes: 120 bpm without cooling, 84 with palmar cooling. Single-subject self-test, not a controlled trial.

Cool is the advantage.

09/01/2026

Most athletes fade past a 39°C core temperature. How pre-cooling banks a thermal buffer — and why the same strategy works before a hot work shift.More

Most athletes fade past a 41°C core temperature. How pre-cooling banks a thermal buffer — and why the same strategy works before a hot work shift.

08/25/2026

A cooled subject went from 180 pull-ups a session to 618 in six weeks. The pull-up studies behind cooling's effect on work volume — and what they actually prove.More

A cooled subject went from 180 pull-ups a session to 618 in six weeks. The pull-up studies behind cooling's effect on work volume — and what they actually prove.

08/25/2026

Unboxing the CoolMitt device with Shervin Shares Shervin Shaikh

CoolMitt vasocooling technology quickly sends cooled blood to your muscles via your heart - allowing you to go stronger, faster, longer, and better.

08/19/2026

Heat and the Brain: How Core Temperature Erodes Judgment

Heat degrades decision-making and coordination before it's a medical emergency — exactly when accidents happen. The cognitive-safety case for cooling the core.

08/18/2026

To every athlete plunging both arms into an ice bucket on a 108° day: we love you. But please — don't.

That relief is a trick your body is playing on you. Ice water on the skin triggers vasoconstriction — a protective reflex that slams your blood vessels shut. And your palms happen to contain the most powerful heat-exchange vessels in your body: specialized structures called AVAs (arteriovenous anastomoses) that can move up to 60% of your cardiac output when you're overheating.

Cool them right, and you cool the core from the inside out. Freeze them, and those vessels close. The radiator goes offline. Your skin feels numb while your core temperature keeps climbing.

The Stanford lab that developed our science nailed the range: cool, not cold. Enough to draw the heat out — not enough to trigger the shutdown.

That's CoolMitt. And it's why athletes from PGA, MLB, the NFL, and the Tour de France reach for it instead of the ice bucket.

Cool is the advantage. Cold shuts it down.

08/12/2026

Recovery starts when core temperature falls. Why cooling the palms during rest intervals restores output faster — for crews on break and athletes between sets.More

Recovery starts when core temperature falls. Why cooling the palms during rest intervals restores output faster — for crews on break and athletes between sets.

08/11/2026

Three ways to feel cooler. None of them is measured on the number that matters.

A cold towel drops your skin temperature. Your skin isn't what governs output, judgment, or safety — your core temperature is, held near 98.6°F (37°C). Two different numbers, and only one of them decides whether you keep going.

Cool a large area of skin fast and it gets worse. The brain reads your skin as its sensor. Convince it the surface is cold and it concludes the emergency is over — then closes the vessels it had opened to dump heat. In Dr. Craig Heller's words: "instead of increasing your heat loss you're decreasing your heat loss."

The neck settles it. In a 2025 randomized cross-over trial, participants wore an ice collar holding 1.2 kg of ice through 20 minutes of cycling at 95°F (35°C). Core temperature at the end of exercise, measured the way researchers actually measure it:

99.97°F (37.76°C) cooled.
99.97°F (37.76°C) not cooled.

Identical. They reported feeling significantly cooler anyway.

A battery fan moves a fraction of that heat.

The palm is the exception. Its hairless glabrous skin carries vessels built to dump heat — under load it sheds heat more than five times faster than ordinary skin. Cool it in the right range and hot blood gives up its heat there and returns to the core cooler. No false signal. No radiator shut.

Feeling cool is a comfort. Being cool is a capability.
Read the full breakdown → coolmitt.com