Kong Signature Rope 22" Double Tug. Kong Signature Double Tug Rope doubles the fun with a unique braid of cotton and fleece that provides an uncompromised stretchy delight that is gentler on a dog’s mouth. The durable material ensures that natural chewing behavior is rewarded again and again with the added benefit of helping clean teeth. The double rings multiply interactive playtime by making games of instinctual tugging even more engaging.