Nike Lab Pre Cool Vest

The Pre Cool Vest by Nike Lab uses frozen water to cool the body prior to events. Designed for the recently completed Olympics to combat the stifling heat and humidity of China, the vest takes the place of air conditioning and goes wherever the athlete goes. When in contact with the skin and vest, cooler blood is circulated through the body and the athlete finds relief from the heat. The cooling takes place through conduction and is less efficient than evaporation, but this may be to protect the athlete from over cooling and other risks.