Motion Cool adds xylitol to the fiber to make the temperature lower thus giving a cool feeling. When dissolved in water (sweat), xylitol can absorb heat and water to decrease the fabric's temperature. Xylitol is a raw material globally renowned for its safe property in the food and medical industry. Cooling function achieved by the durable Xylitol process. Using Motion cool and textile tissues optimization technology for effectiveness. It quickly absorbs even during intense exercise and gives a cool sensation function.