The Twist ‘n Treat is the first and only 2-piece adjustable rubber treat dispensing toy. The rate of treat dispersal can be adjusted to suit the interest and ability of the dog. When first introducing the toy to your dog, we suggest leaving enough space in the opening to allow treats to fall our regularly, so your dog can “win the game.” Once your dog plays successfully with the Twist 'n Treat, you can screw the opening tighter to extend the length of play. The adjustable opening allows the Twist 'n Treat to be filled with a variety of hard, soft, and smear-able treats. Made of natural rubber.