Rayon is a breathable fiber. Rayon fabrics used in clothing are usually breathable, but there is no guarantee that every finished rayon fabric will have this property. This is because there are other factors besides fiber content that can affect the breathability of the finished fabric.
There are many factors that contribute to rayon breathable fabrics. Some of them are as follows:
1. Manufacturers take natural raw materials such as bamboo, wood chips, or wood pulp and process them with various chemicals to derive rayon fibers. The resulting rayon fibers are naturally breathable.
2. At each step of the manufacturing process, the manufacturer makes a choice to either enhance the breathability of the fiber or reduce its breathability. These choices will depend on the intended end use of the finished fabric.
Rayon has many possible industrial applications. In addition to apparel fabrics, manufacturers use rayon to produce upholstery fabrics, tire components, upholstery, and a variety of other products. In finished rayon for these other applications, breathability is not an important consideration.