EnvironMat with a lip protects your low-pile carpets from wear and tear. Hard rolling top surface makes chair movement easy. Textured top surface resists scuffs caused by chair casters. Durable, straight-edged, eco-friendly chairmat is made with a high percentage of post-consumer recycled water/beverage containers and is 100 percent recyclable. Chairmat also features a studded bottom and 20" wide x 12" long lip.