This is an interactive story that teaches kids to be NINJAS featuring J&A's Inflatable Dudes Ninja Punching Bag. Follow along the story as NINJA teaches his friends how to do NINJA moves while using your punching bag. This book also gives positive "NINJA" lessons throughout the story that teaches kids valuable lessons for life. "Training with Ninja" is for kids 3-10 and typically for those who love NINJAS! Boys, girls, toddlers, and students.