The Hypersphere takes muscle release to another level. Unlike a regular massage ball, it uses vibration to go deeper into tight areas helping reduce tension, improve circulation, and speed up recovery. Hypersphere Vibrating Massage Ball www.joarbit.com Hypersphere Go Amazon.com: Hyperice Hypersphere Go Vibrating Massage Ball for Muscle Recovery, Myofascial Release and Soreness Relief Portable Fitness Massager, Perfect for use at the Gym, or at Home : Health & Household Hyperice Hypersphere