Nike PreCool Vest

To keep athletes cool at the world's biggest sporting event Nike has unveiled the PreCool Vest. Developed specially for the Bejing Olympics the vest has multiple triangular cavities of various sizes and inside there is frozen water. To be used within one hour prior to competition it lowers the body temperature of the athlete and they last 21% longer. The vest is made with two different materials, the first acts as a thermos, preventing the cold from escaping and the second helps to keep the body cool.

via