Hyperkewl
HyperKewl is a combination of specialized fabric and fibers which utilizes a unique chemistry to achieve rapid absorption, stable water storage, and enhanced evaporation.
HOW DOES EVAPORATIVE COOLING WORK?
HyperKewl technology can provide an average cooling of 10-15°F/6-8°C cooler than the ambient temperature (depending on airflow).
HyperKewl™ fabric absorbs and then slowly releases water through evaporation. When the water evaporates, energy is consumed, and a cooling effect is created. We look at this as supercharging the body’s natural cooling process.
Source: https://www.techniche-intl.com/our-technology/evaporative-cooling/