"This moment was highlighted in an NBC broadcast, where Kipchoge was seen several times holding the side of his body. Later, he explained that the pain in his back forced him to withdraw from this highly anticipated race. However, it was not only Kipchoge's decision to pull out of the race that drew attention, but also the new accessory he wore on his head."

The runner who has won Olympic gold medals twice is seen wearing an Omius cooling headband, a relatively new technology, especially in the world of marathons. This headband is not only worn by Kipchoge but also by several top athletes competing in the Olympics, particularly from the athletics branch that competes during the day and in hot weather. 

"Additionally, Abdi Nageeye, the silver medalist at the Tokyo Olympics, was also seen wearing the same device, although unfortunately he did not manage to finish the race in Paris. Bashir Abdi, a Belgian runner who won the silver medal, also wore this headband during the race, although he took it off during the award ceremony."

"When water changes from liquid to gas on the surface of graphite, heat is drawn from the inside of the cooling piece that is in direct contact with the skin. This effect creates a significant cooling sensation, which is very useful in keeping the body temperature stable during intense physical activity. Source: Runnersworld.com."