Kong Air Dog, Medium, Tennis Balls Dog Toy, Combination Of 2 Classic Dog Toys, Common Tennis Ball & The Squeaker Toy Creates Air Tennis Balls, Durable, High Quality Squeak Will Not Wear Down A Dog's Teeth, All Squeaker Units Are Recessed In Rubber & Covered With Tennis Ball Fabric For Safety, High Floating Toy Is Perfect For All Dogs That Love To Fetch.