Developed byDuPont Textiles (now Invista) CoolMax was designed for use in clothing which would be used during extreme physical exercise. Unlike other fibres, CoolMax fibres aren’t round. They’re slightly oblong shaped in cross-section with grooves running lengthwise along the threads, thisallows moisture/liquid to be drawn away quickly from the skin. The moisture wicks through the fabric via these channels and out to a wider surface area for a greater evaporation rate. Keeping you feeling cool and dry.