The dog ball is made of E-TPU material, which has excellent elasticity and deformation elasticity. The E-TPU material properties allow dog toy balls to float in water. So your beloved dog can enjoy picking up things from swimming pools, lakes, or beaches. Durable and suitable for strong chewers, while being soft to the mouth of dogs, making it safe to use on teeth. Designed specifically for throwing and retrieving balls. Lightweight and will not cause harm to the dog when thrown. Dogs jump, run, and grab balls to train their reaction and jumping abilities for medium and large dogs, actively enhancing the relationship between you and your dog. 3 1/10'' L