This chew toy is molded from durable nylon in a classic knuckle bone shape sized for x-large dogs over 50 pounds. Raised ridges and nubs on the surface create friction against teeth as a dog gnaws, and flavor is infused throughout the material rather than just on the surface. It is built to stand up to sustained, forceful chewing and is intended to give dogs an outlet for natural chewing behavior instead of household items. Each purchase includes one toy with no assembly required. The toy should not be cleaned in a dishwasher, washing machine, microwave, or autoclave; wiping it down or hand washing is recommended instead. As with any chew, a dog should be supervised while using it and the toy should be sized to the individual dog's weight and chewing strength.