The Kong Dog Airdog Squeakair Balls are a tennis ball style toy with a squeaker making fetch and catch fun for your dog. The Kong Dog Airdog Squeakair Balls are made with non abrasive tennis ball felt that will protect your dogs teeth and prevent wear on their teeth making them a safer alternative to ordinary tennis balls. The Kong Dog Airdog Squeakair Balls are available in 4 different sizes - Extra Small, Small, Medium and Large, making them the perfect ball for dogs of all shapes and size