Chew on this: a fetching �stick� so wonderfully bendy and squishy that humans like to play with it almost as much as dogs do! Zwig combines shapes and textures to create an irresistible chew-feel with a bouncy action that keeps going even when dogs are just carrying it around (which they love to do). It�s easy for even pups or senior dogs to grasp by mouth or hold between the paws while chewing. Made of our proven and much-loved Zogoflex, Zwig is blow molded with a hollow center to be lightweight and durable for moderate chewers and persistent chewers who like the springy resistance of this more flexible chew toy.