It is made of natural rubber. It is not particularly hard and has a certain elasticity. It will bounce when it hits the ground, so it can better train the dog's agility! Through full contact with the dog's teeth, it can not only achieve the effect of molar cleaning but also enhance the dog's jaw muscle development! The use of rubber, environmental protection, non-toxic, good bite resistance, makes pets prefer a good bouncing effect, well ensures the sharp training of pets, multiple colors to choose from, and enriches the fun of life. Welcome to inquiry the detailed price