Petsport Jr. Tuffball Squeak dog toys provide all the fun of a standard tennis ball with extra-long life and a built-in squeaker for added fun. Unlike normal tennis balls, Tuffballs are made with all natural rubber and non-abrasive polyester felt that won't harm your dog's teeth or gums.Long lasting natural rubber ball toysNon-abrasive felt will not harm teeth or gumsBuilt-in squeaker enhances playtimeColorfast - colors will not run or stainDimensions: 1.8" diameter.