These rubber dog chews are bouncy and fun for you and your best friend. Not recommended for strong chewers. Rhino Stuff & Chew holds four Nylabone chews (petite, regular or wolf size Edible, Durable or Flexible bones), which can be inserted into its chambers for extra chewing enjoyment! Made of natural rubber with a fresh mint scent for lots of bouncy fun. The "Paws-free" design is great for dogs that can't (or won't) hold a chew bone.