The Donut balance ball looks just like you'd imagine; like a donut. This round balance ball has a hole in the middle, which allows the air to be distributed more evenly. Are you looking for stability training for dogs or want to train your dog's internal muscles and stability, then a balance ball could be something for you. With a Donut and lots of treats, you have what you need to do a physical indoor training for your dog.
Donut comes in two different sizes and then there is an inflatable ring that you can put underneath to make the ball more stable.