Waterhog Classic Diamond Entrance Mat Perfect for most applications inside or out, Waterhog Classic Diamond's attractive mat styles are manufactured using a 100% polypropylene face and a rubber backing that contains 20% recycled tire content. The rubber reinforced face nubs provide bi-level crush proof scraping action for years of durable service. All Waterhog Classic Diamond mats come with a rubber water dam border to trap water and dirt on the mat. 4' x 6'. Red/Black.