Our best selling Ball Plus Toy times 3! Designed to be interchangeable for use with the Tether Tug Outdoor Dog Toy, the handheld EasyTug tug of war toy, or as a stand alone dog toy. This toy is tough and durable–made with thick nylon rope wrapped in a firehose-like material, it's made for dogs to easily grab and pull. The Tennis Ball Plus Toy is made to withstand some of the toughest chewers! AND, we use safely recycled tennis balls to help reduce our carbon pawprint.