The aim of the study was to determine the effects of knitting type, yarn count and mass of commercially knitted fabrics on comfort parameters including air permeability and moisture management. For this purpose, comfort properties of 100% cotton single jersey, 1x1 and 2x1 rib fabrics were determined. Air permeability and moisture management properties were measured by using TexTest FX3300-III air permeability tester instrument and SDL Atlas MMT Moisture Management Tester, respectively. The results indicated that commercial knitted fabrics' air permeability decreased unproportional to the mass of fabrics. Rib fabrics had higher air permeability values compared to single jersey fabrics. Furthermore, 30/1 single jersey and rib fabrics' moisture management properties decreased as the fabrics' mass increased. The results also indicated that wetting time and absorption rate increases as the single jersey fabrics' mass increases.