The Mega Mutt Mega Chewz Wishbone is the ideal toy for heavy chewers. These durable chew toys are made of a high-strength polyurethane material that is designed to handle high impact. The Wishbone's curved shape allows your dog to easily hold one end while chewing the other. Mega Chewz tough toys are great for gnawing and chewing, and also help to relieve boredom. Ideal for medium to extra-large sized dogs.