Nylon is one of the most popular fibers in the rug industry. Some of the qualities that make is so popular in the manufacturing of rugs is that it is very strong, stain and soil resistant, non-allergenic, has good dyeability, is easy to clean and drys quickly.
Since nylon does dye well, the patterns used are often vibrant in color and very detailed. This may be the reason that out of all synthetic rugs, nylon is the most popular.