The Hypersphere Mini by Hyperice Packed with Power! This massage ball fits into the palm of your hand with three speeds of vibration – low, medium, and high. You can roll it over your muscles, wherever they need some loosening up. The compact, textured, vibrating Hypersphere Mini is affordable, travel-friendly and fitness enthusiasts swear by it. Ideal for rolling out after a workout, but also great for those long workdays spending too much time sitting down....