Polyester and rayon are different fabrics, although most people usually confuse them with one another. Rayon is a plant material made from chemicals, making it a semi-synthetic fiber. It is pretty similar to silk and is a breathable option, making it suitable for warm temperatures and drapes. On the other hand, polyester is a petroleum-based synthetic that isn’t breathable. As a result, polyester doesn’t drape and can make the wearer feel clammy in hot weather conditions. These fabrics have different properties, making it essential to use the right option for your project. In this rayon vs polyester comparison, you’ll learn how they differ and when to use them. Rayon vs Polyester: A Detailed Comparison!