Nylabone Durachew Big Chew; Knot Bone. Made from extra-tough nylon, this Big Chew Knot Bone satisfies BIG dogs over 50 pounds! Your big fur friend is sure to love this chew toy's delicious flavor and subtle texture from its unique knotted shape. Plus, it helps clean teeth and control plaque and tartar buildup as dogs chew. This durable dog toy also discourages destructive chewing habits and helps prevent boredom. Whether you're training, occupying, or working to manage separation anxiety, there are plenty of reasons for you and your furry friend to love this dog chew bone. Go ahead and give your powerful chewer a Nylabone chew toy! Nylon chew toy satisfies aggressive chewers Helps clean teeth and freshen breath as dogs chew Discourages destructive chewing Proudly made in the USA! Helps with: Training & Reward Weight Management Dental Care Stress & Anxiety Boredom Destructive Chewing Treat Size: XXL (dogs over 50 pounds)