The body reacts to temperature changes with changes in energy use that drains performance ability. Heat illness and hyperthermia are extreme conditions just like hypothermia that the body guards itself against. Die 37 °CCR Technology™ developed by X-Technology supports the body in its effort the maintain the core body temperature and keep saved energy ready for your athletic endeavors. At 37 °C we feel quite comfortable and are ready to perform. But when we are freezing, our body shuts down blood vessels and causes us to shiver in an attempt to maintain that core body temperature. It's different during activity -- the physical activity opens up blood vessels, and the body reacts by sweating. Both conditions drain energy from the body.

X-Bionic Functional Underwear helps the body maintain its optimal temperature longer so you can save valuable energy that you can then expend for performance.