Trigger Point MB5 Massage BallWith a five inch diameter, the MB5 is ideal for relieving tightness and restoring movement in hard to reach muscle groups like the hips and shoulders. The MB5 is a great tool for anyone needing to release tight shoulders or hips. Its five inch diameter was specifically designed to address the deeper tissue in the large muscle groups that become tight due to repetitive movement and sitting. The layered construction made up of different densities offers