Our mini-sized tennis balls are 1.5 inches and perfectly sized for most toy breeds like Chihuahuas, Pomeranians, Miniature Pinschers, Yorkies, and other small puppies. These soft, flexible balls are best for play between dogs and their pet parents during games of fetch rather than as chew toys. The polyester felt covering is safe for your dog’s teeth and is easily gripped by even the tiniest teeth. Makes the perfect gift for the new dog owner.