Polypropylene construction. Absorbs and holds water. Rubber backing for traction. Cleans easily with any garden hose. A Frontgate exclusive. Our WATER & DIRT SHIELD First Defense Indoor/Outdoor Mat combines the scraping action of a rubber mat with the water retention of our other Water and Dirt Shield Mats. Half of the mat features a ridged rubber construction that digs deep into the soles of shoes and boots to scrape away dirt and mud, while the other half still traps and holds up to a gallon of water per square yard. . . . . . Made in the USA.More Information