A durable plastic base holds a container filled with your pets favorite kibble that self-fills the base when food levels get low. Made with Microban antimicrobial that protects against the growth of stain and odor-causing bacteria mold and mildew. Available in 4 sizes and various colors. Complimenting waterer also available. Dimensions:Extra Large: 10.3" x 17.2" x 17.9"Large: 8.8" x 14.6" x 14.7"Medium: 6.8" x 11.4" x 11.9"Small: 5.7" x 9.5" x 9.7