Cooltec yarn has a  clover-like  cross section which makes it possible to absorb and evaporate body sweat rapidly by the capilliary effect.

Due to  the clover-like cross section, the surface area of each filament yarn is wider than that of standard yarns and so diffuses and evaporates the water very quickly.

Cooltec fabrics not only dry fast but due to  the speed of evaporation,  they dry fast and help maintain cool body temperature for excellent comfort.