JW® Invincible Chains® provides your dog with the rubber texture he loves to chew on. Solid, no glue construction stands up to the abuse. A terrific tug as well - easy to hold on to while your dog tugs with all his or her might. Enjoy a game of toss and tug with this unique dog toy. Features include rubber rings with rope. Durable, and great for interactive play, this JW dog toy is ideal for tug and fetch.