Covered in durable; reinforced nylon which makes the Wubba Friends Ballistic perfect for interactive games of tug and fetch. Not meant to be used for chew sessions. The KONG Wubba Ballistic Friends are the cutest and toughest interactive squeak and shake toys available. These versatile toys are perfect for indoor and outdoor use, and their floppy tails make them easy to pick up and throw. Each toy is covered with durable, reinforced nylon for added toughness. Please ensure this toy is suitable for your pets play preferences & size, remembering that this toy is not indestructible. Pets should be supervised at all times during play. To prevent choking hazards, please ensure that your pets toys are monitored frequently. If they become damaged, remove immediately & replace as necessary. If the colour you've chosen isn't available, then a random colour will be selected.