Unlock twice the relief with triggerpoint’s MB2 Peanut massage ball roller. Designed with two settings to ease tight muscles and stiffness in the neck and back, the MB2 can support proper posture and upper back mobility. The adjustable length can be locked for use on smaller muscles that attach directly to the spine, or extended to target the larger muscles of the back. The TriggerPoint MB2 massage balls use a patented, layered construction made up of different densities. The unique EVA foam surface is very dense, yet still compresses to “grip” the tissue, encouraging blood and oxygen flow to keep muscles and fascia healthy.