Welcome to the future of 3-Dimensional portable training, which puts a revolutionary functional fitness gym always within reach. The Patent-Pending Fitness Sphere comes in two sizes: 10 inches and 11.5 inches.  The VSEM VOODOO Fitness Sphere, along with your body weight and positioning, can literally replace numerous pieces of equipment, including dumbbells, kettlebells, and cable machines. All while being infinitely safer to utilize.