Our pet tennis ball is made of natural rubber and felt material. It is pretty durable, non-toxic, safe for your pets. The diameter is about 2 1/2″. It is suitable for people and pets to go outdoor for having fun, training, and chasing in parks, yards and so on. Custom logo can be printed on tennis and color of tennis can be customized. Please feel free to contact with us if you would like a sample or order less than MOQ.