The Kamagon Ball®’s patented, Hydro-Inertia™ technology adds up to thirteen (9” size) or 45 pounds (14” size) of fluid resistance to exercises, and enables users to burn more calories than traditional, static weight training with the same amount of resistance. The Kamagon Ball® is a versatile, functional training tool that recruits more muscle fibers, and teaches the body to stabilize while performing exercises. Available in 9” and 14” sizes, three color options (pink, blue, or grey), and includes a workout DVD. Certifications and workshops available.