AirDog Squeakair Ball by Kong
AirDog Squeakerair Ball is based on the most popular dog toy of all time, the tennis ball. This squeakair ball is made of 100% pure tennis ball material, using the same durable materials as any high quality tennis ball and utilizes a new and improved felt covering that won't abrade your dog's teeth. 

Dimension:
X-Small - 1.5"
Small - 2"
Medium - 2.5"
Large - 3.25"
X-Large - 4"