The thermal properties of clothing materials, which relate thermal comfort of the user, involve the heat transfer between a clothed body and the environment. The thermal resistance of a clothing system represents a quantitative evaluation of how good the clothing provides thermal barrier to the wearer. In many years, thermal manikins have been used to measure clothing insulation and to evaluate the thermal environment. The clothing industry uses manikins for development of clothing systems with improved thermal properties. The aim of this paper is to research thermal comfort properties of different disposable surgical gowns (Spunlace-normal, Spunlace-reinforced, and SMS-normal) by using the thermal manikin.