Is polyester the same as dri fit?

Polyester and Dri-FIT are not the same, though Dri-FIT is a specific type of fabric made from polyester. Dri-FIT is a moisture-wicking technology developed by Nike that helps to keep athletes dry by drawing sweat away from the skin to the fabric's surface, where it can evaporate. While all Dri-FIT fabrics contain polyester, not all polyester fabrics have the moisture-wicking properties of Dri-FIT.