The Trigger Point MB5 massage ball is the perfect tool for the release of larger, tight muscle groups. Work out the kinks in hard to reach areas like the hips and shoulders. Use the self-generated pressure to relieve the pain and soreness from tough training sessions so you can bounce back quickly. Keep in your gym bag for daily pre and post-workout use. A 5" Diameter for easy storage and travel. Relax larger, overworked muscles of the shoulders and hips. The layered, multi-density construction helps promote blood flow for the healing of muscle tissue damaged during training. Convenient size is perfect for travel.