Free shipping with 7-15 days to your door. Made of natural rubber, safe, non-toxic, resistant to chew, no worry about your pet’s health. Concave-convex surface helps massage and clean dog’s teeth, fresh breath and remove dental calculus effectively. Built-in squeaker, catch dog’s interest. Provide long lasting entertainment, fights anxiety and boredom. Size: 4.1' L x 1.6' W, suitable for small and medium dogs.