The KONG Traxx is a robust toy made of durable rubber – another top-quality product from KONG. The unusual tyre shape makes this toy easy to carry. The elasticity of the tyre makes for great fun in throwing and fetching games, as it bounces around unpredictably. The opening in the middle of KONG Traxx can also be filled with treats for your dog to snuffle out, providing endless amusement. The KONG Traxx (Size M) at a glance: Made of robust natural rubber Colour: black Dimensions (outer/inner): diameter 11/6 cm x H 4 cm For dogs up to 30 kg Please note: No toy is completely indestructible. As with any other product, please supervise your pet with this toy. Check the product regularly for damage, and replace the toy if it is damaged or missing any pieces to avoid potential injury to your pet.