The study specifies requirements for the wearer comfort in sportswear. Two essential components of comfort are considered – physiological and physical comfort. Comfort level for non-professional sportswear sets has been determined analysing the physiological comfort, as well as the level of physical comfort. The research resulted in development of the scheme for prediction of wearer physiological and physical comfort in sportswear. The athlete’s physiological comfort is predicted by measuring experimentally the thermal resistance and water vapour resistance of fabrics specimens of a non-professional sportswear design sets in laboratory. Physical comfort in a sportswear sets and factors influencing it were determined first determining the typical movements of an athlete in the tested sportswear design sets.