This paper looked at the influence of Dyneema content on the comfort related properties such as heat energy dissipation, water vapor diffusion, and air permeability of the cotton/Dyneema fabrics. 100% cotton fabric showed the least resistance to water vapor diffusion. The diffusion resistance increased with the increasing Dyneema content in the fabric. 100% cotton fabric also showed maximum airpermeability, and this was true for airpermeabilities measured on both dry and wet fabrics. The blended fabric showed progressively lower airpermeability with increasing Dyneema content. The heat energy dissipation through the fabric was not found to be related to the Dyneema content, and this was true for dissipations through both dry and wet fabrics.