This multi-use ball can be used as an aid in training horses, a tool to help rider work on balance and improve seat position and a horse toy that offers hours of enjoyment. Incorporating this activity ball into training sessions helps desensitize horses and reduces spooking or overreating to new things. Includes a 10-minute DVD featuring Stacy Westfall that guides you through the proper uses for this ball. Also includes a pump for easy inflation. The ball's circumference should be approximately 95" when inflated. Blue.