Designed to mimic the feeling of a deep tissue massage, the TriggerPoint MBX 2.5'' Massage Ball targets muscular discomfort in the calves and pecs for instant relief. The MBX Massage Ball is made of an extra firm EVA foam, which enhances blood and oxygen flow when applied to affected areas. The ball is also slip resistant, offering excellent grip and control. Improve your recovery time with the TriggerPoint MBX 2.5'' Massage Ball.