This unique Sassafras Switch Mat tray base is made of coco-husk fibers for a natural look. Perfect for use with our Sassafras mats, this tray features a 22 x 10 inch space to place your favorite interchangeable mat designs. Made 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.