Radilon® Chill-fit is a polyamide 6 yarn that combines the ability to intrinsically generate freshness and absorb sweat, allowing it to evaporate quickly. It is a highly functional yarn capable of providing thermal regulation of the fabric without the need for additional treatments. Radilon® Chill-fit thus leaves the user with a pleasant feeling of comfort and freshness for an extended period while also offering high protection against UV rays.