Introduce a playful, unpredictable bounce to your play sessions with the NITRO grip ball. The winged design prevents choking hazards and makes it easier for you to retrieve the ball from your dog With natural rubber core for an increased throwing distance Unique, winged design prevents choking Easy to take from your dog Fun, unpredictable rebound The side wings allow you to take the NITRO Grip Ball from your dog easily and safely Available Sizes: 12.4 cm diam. (9 in)