The TriggerPoint MB1 Massage Ball is an award-winning soft foam massage ball perfect for rolling out tight muscles, helping to alleviate pain and fatigue. At 2.6 inches in diameter, it's the perfect size to dig deep into the calves, piriformis, pecs, TFL, and other small muscles around the body. Deep tissue massage can help to stimulate circulation and help muscles relax, improving performance and encouraging recovery after injury or a hard workout. Give it a try if you've got some knots you haven't been able to work out!