The science on how Cooling Cuffs improve athletic performance.

Cooling the body at the wrist can alter thermoregulation, rapidly lower core body temperature, and quickly restore temperature homeostasis.

During exertion, humans must maintain a rather tight range of body temperatures. As body temperature increases above 101°F, for example, physical performance declines considerably. Likewise, as ambient temperature increases, optimal physical performance declines by 10-20%. There is increased strain on the heart, because the blood is rerouted to the skin for cooling purposes, which draws blood away from the muscles. In an effort to cool the body, thermoregulatory mechanisms increase sweating. The body requires significant energy to complete all of these thermoregulatory tasks. Instead of using the body’s limited energy stores for physical performance, a portion must be diverted to thermoregulation to restore homeostasis. Moreover, the behavioral homeostatic drive to cool down the overheated body gets more and more uncomfortable. So, as the body increases in temperature, increasing physical discomfort makes it more and more difficult for the person to perform their desired activity. Instead, people want to stop and cool down their bodies. The increasing internal discomfort with increasing core body temperature is a normal, homeostatic process, but it is not particularly helpful in certain situations. In elite athletes, the sensation of being overheated interferes with top athletic performance. A marathon runner running in the heat must overcome the homeostatic drive to cool their body down with an even stronger will to continue running. It is not hard to imagine how cooling the body during exercise could help athletes improve performance—keeping the body cool allows the athlete to focus on physical performance and quiet the drive to cool themselves down. Concentrated cooling also has direct benefits in the physiological aspects of physical exercise and performance. Concentrated cooling keeps the body closer to its homeostatic set point during exercise, even in warm environments. The body, in turn, wastes less energy to regulate body temperature. Cooler body temperatures mean less sweating, which preserves total body water content and electrolytes that would otherwise be excreted and lost during sweating.

The flexor side of the wrist is the best location to cool the body. The wrist features non-hairy skin, known as Glabrous skin, which possess specialized blood vessels that can release considerably more heat as compared to hairy skin. Glabrous skin is only found on the hands, feet, wrist, and ankles. But only the wrist is practical for a wearable, making it the optimal location to augment thermoregulation. 


Cooling Cuffs help you fight excessive heat to extend endurance. Concentrated cooling is applied to where the body can best dissipate heat, the wrist. The body doesn't have to expend so much energy on thermoregulation, allowing energy to be used for exertion. 


Wade, professional volleyball player

I LOVE these cooling cuffs! I am a competitive beach volleyball player and these are a perfect way to quickly cool off during timeouts and in between games through tournaments. I definitely recommend grabbing a few of these for hot days! 


Sandy, former Olympian

I tried the Cooling Cuff and I was amazed at how well it cooled me down. When I work out, I sweat; when I used the Cooling Cuff, I was shocked at how my sweat had decreased; this allowed me to work out longer and with more comfort.