Bi-level surface effectively scrapes dirt and moisture from shoes, trapping it beneath shoe level to prevent tracking. Durable reinforced rubber nubs prevent pile from crushing and extend the performance life of the mat. Fade and stain resistant solution-dyed PET fabric (24 oz./yard) is resistant to staining, dries quickly, and will not fade or rot. Eco-Friendly rubber backing contains 20% post-consumer recycled rubber from car tires; PET surface fabric is made from at least 97% recycled content reclaimed from plastic.