Keeps the tough dirt outside where it belongs. Stiff polyethylene bristles won't wear out. Contoured foot hold on each side to keep in place whils scraping shoes. Handle for portability. Durable, weather-resistant frame with nonslip bottom. Hoses off for easy cleaning. Perfect for back door, porch, or garage. Size: 17.5" L. x 10.0" W. x 3.5" H. Cinder.