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. This vest is recommended to be used about an hour before the athlete competes. It should be use for the normal warm-up of the player, remove then compete thus cooling your skin and lowering your body temperature and making the athlete 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.
