This top-selling decorative gray Welcome mat tray is the perfect base for Evergreen's Sassafras switch mat inserts. With a flocked border that creates a subtle striped pattern, this tray features a 22 x 10 inch space to place your favorite interchangeable Sassafras mat designs. Made of recycled rubber with a skid-resistant backing, the classic frame is mildew resistant, making it perfect for indoor or outdoor use. The diamond backing allows water to drain, ensuring your door mats last. Simply spot clean with soap and warm water when needed.