Rayon Thread's Advantages

Although polyester thread is less likely to “run” during laundering, rayon thread has its advantages. Rayon thread has more “sheen” and is better at reflecting light. Because of this sheen rayon thread may be desirable for large, detailed designs. Also, rayon thread is available in more shades and may work better for realistic designs (e.g. animals, birds, fish) that require lots of thread colors.

More "threads" to come!