The Breathable Illusion: Polyester and Rayon's Unfulfilled Promise Marketing language used by manufacturers often exaggerates the breathability of polyester and rayon fabrics.
Upon closer inspection, these claims reveal themselves to be overstated at best. To understand why, we need to examine the science behind fabric breathability.
The Science Behind Fabric Breathability Fabric breathability is determined by several key factors: moisture transfer rates, air permeability, and fiber structure.