Woven tubular plastic. Provides a workable barrier between your pet and the environment. Tightly woven, they form a smooth surface for removal of solid waste, yet allow liquids to pass through easily. Easy to clean by hose or brush. Roll up for convenient storage and transportation. Colors and styles may vary.
After going to many agility trials outdoors and seeing other handlers using these poly ground cover mats, I finally bought one. They are an excellent investment. I put them under my ex-pens, and they keep the dogs free of dirt. They are long lasting, too. Before I bought mine, I interviewed some people who had them, and they said they last for years.