1. Safe Material: Non-odor material. High-quality plastic is used to make this dog treat ball. 2. Unique Food Launcher: By placing the tennis ball in the opening on top, the hole will automatically open and provides a reward for your dog. 6cm elastic tennis ball, suitable for pet of different ages. With removable physical disk on both sides, it is clean and hygienic 3. IQ Interaction Toy: The IQ puzzle balls stimulate intellectual growth, increase daily exercise, help in training your pets both in agility and intelligence. 4. Taking Up No Space: Suitable size 18 x 18.5cm, great for using in various places, such as living room, kitchen and garden. 5. Killing Time: Even if you are very busy, it can help your pet stay healthy and energetic, relieve stress. Suitable for dogs of all ages. Size: about. 18 x 18.5cm Material: Plastic Ball Diameter: about 6cm Color: As the picture show NoticeDue to the different monitor and light effect, the actual color maybe a slight different from the picture color Please allow 1-3cm differs due to manual measurement includes:1 x Food Reward Machine Tennis Balls Spoon 2 x Detachable Board