The Franklin Pet Supply rsf squeak ball is a fun way to play fetch. These balls have a built-in squeaker encouraging your dog to play. The Neon color was selected with the dog's visual spectrum in mind making it easy for them to see and find. The balls are tough and hold up to slobber and dirt. These balls are the same size as standard tennis balls and will fit the Franklin rsf ball Launcher or others on the market. Our products are tested to the highest Standard in the industry. You can buy with confidence.