ULTIMATE SKINTELLIGENCE. Warm weather and sporting activity can threaten the body with overheating. Power loss is the result. Because 90% of the heat regulation in humans is through the skin. INVENT SUMMERLIGHT counteracts the risk of overheating. INVENT SUMMERLIGHT has been created by the X-Bionic developers specifically for use in the warm summer months. Worn next to the skin it exerts it exerts it air-conditioning effect according to the intensity of the movement. It cools when you sweat and warms when you are cold.