 This work examines the thermal comfort properties of cotton, bamboo, and blended yarns fabrics, finding that the physical characteristics of cotton, bamboo, 50-50, blended fabrics are closest to pure cotton yarn fabrics for a count of 30 tex. The proportion of bamboo fiber in the fabrics affects the physical properties such as aerial density and fiber fineness. The plain woven fabric aligns differently depending on the type of yarn, with higher air and water vapor permeability in cotton in warp direction and bamboo in weft direction. The thermal conductivity and resistance of blended fabrics decrease with an increase in bamboo content, while reduction in inter- yarn space and hairiness leads to lower air and water permeability values with more cotton proportion. Enhanced WVP and air permeability are observed with higher bamboo content. This article was authored by Kathika Rukami, Sampadpavai Subramni, Sathish Kumar Polynyopin, and others.