PQK1004 Features: * Dog toy * Pair of small tires molded together as a single ball * Easy for dogs to retrieve * Fun rolling action * Contains Blinky Ball in the center * Replaceable batteries * Indoor / outdoor use Options: * Available in 3.5"" and 5"" sizes Dimensions: * 3.5"" Weight: 0.25 lb * 3.5"" Dimensions: 3.5"" H x 3.5"" W x 3.5"" D * 5"" Weight: 0.75 lb * 5"" Dimensions: 5"" H x 5"" W x 5"" D