Superior Manufacturing Notrax® Ridge Scraper® Black 1/4" Entrance Mat measuring 3' X 5' includes specially formulated rubber that resist harsh weather environments and heavy foot traffic. Entrance mat high-low scraping design allows easy cleansing of soil particles. It is well suited for both indoor and outdoor high traffic entryways. It contains spills on the raised edge that trap debris. Raised bar design removes moisture, rubble, wreckage, ruins, litter and discarded garbage from shoes.