The MouseRug and CoasterRug surfaces are made with world-patented LextraŽ yarn-dyed nylon fiber coating process (see image above) and they are printed without ink. The quality may be compared to high-wear carpeting construction, although on a much finer scale. The fibers are .75 millimeters long (more than 7 million on each MouseRug)--lovely soft feel, precise mouse tracking (optical OR ball) and never hot or cold or sticky to the touch! Fibers are permanently locked into base adhesives--designs for truck floormats are made with the same process. The natural rubber base material is made in the U.S.A. from rubber that comes from trees in southeast Asia. Fringed ends of the MouseRugs and CoasterRugs are custom produced at a textile mill in the Carolinas--the same company making fringe for well-known makers full size rugs.