Water Hog Classic is one of the many different styles in the Water Hog mat. The most popular is Classic. They all come with Rubber Border or Fashion Border (no rubber edges). There backing is all rubber , 3/8” thick bi-level surface. Effectively removes and stores dirt and moisture beneath shoe level between cleanings. Water hog mat to hold up to 1 1/2 gallons of water per square yard, water and dirt stay on the mat.