You may have noticed that a number of elite athletes in the weekend’s Olympic marathons, including former Olympic champion Eliud Kipchoge, Olympic champion Sifan Hassan and bronze medallist Hellen Obiri, were sporting unusual headbands that look almost like miniature solar panels. In fact, they were taking advantage of some “cool” new wearable tech for athletes exercising in hot weather.
The headbands are made by the company Omius, and comes in various configurations (there is also a cap and a visor) and two colours, but all feature the 20 squares of graphite that provide the cooling.
The graphite pieces contact the skin directly and are held in place by a silicon grid. They function by absorbing sweat, and their irregular surfaces greatly increase the amount of surface area subject to sweat evaporation, which speeds cooling. (Evaporation of sweat is the body’s mechanism for cooling it down.) The headband weighs only 50 grams (a little more than an ounce and a half), and require no freezing or charging. The cooling pieces continue to provide cooling as long as needed, as long as they stay moist and are subject to airflow (either outdoors, or from a fan if using indoors). The pieces are reusable.
Watch out for the world record-holder 🫡
🇪🇹’s Tigist Assefa looks in control as a lead group of 20 athletes goes through halfway in 1:13:22.#Paris2024 pic.twitter.com/WisAvMptiV
— World Athletics (@WorldAthletics) August 11, 2024
The Omius website warns that the cooling pieces are fragile and should be washed, handled and stored with care. (It suggests treating them like an expensive pair of sunglasses.)
They are also not cheap. The headband will set you back CDN $277.50; a cap incorporating the tech is $291.38, and a set of cooling pieces on its own is $124.08. Yes, they ship internationally, and no doubt they will be swamped with orders since the weekend.
