By wearing Nike's PreCool vest for an hour before competition, it takes 21 percent longer for an athlete's core body temperature to reach the critical level where fatigue sets in. The latest prototype, featuring a body-conforming design inspired by '60s minidresses, is slated to roll out during the Beijing Games. The vest is filled with cold water (it weighs eight pounds when full, 14 percent less than earlier versions) and drained through two valves. A fabric that protects skin from contact with a freezing surface is laminated to thermoplastic polyurethane cells that hold the water. A six-millimeter air gap provides insulation, and a thin layer of aluminum reflects radiant heat.
Nike PreCool Price not set; nike.comLuis Bruno
This is not a story about steroids. But it is about improving your abilities on the playing field. Using technology as sophisticated as any developed in traditional fields of science, athletics companies have designed this equipment to make you better, stronger, faster and healthier. It’s funded by absurd amounts of money and validated by the best athletes in the world. And if you’re lucky, it will be sitting in your gym bag soon.