This top-selling decorative black mat tray is the perfect base for Evergreen's Sassafras switch mat inserts. There is a 22 x 10 inch space to place your favorite switchable mat design. The classic black frame is made from recycled rubber and is mildew resistant, featuring a skid-resistant backing to keep everything in place. The base measures approximately 30 x 18 inches and is safe for indoor or outdoor use. To clean, simply spot clean with soap and warm water.