The TriggerPoint Carbon Foam Roller helps to release the toughest, deepest knots, reduce muscle soreness, increase range of motion, and prevent injury through deep-tissue self-massage. It features extra firm and high-profiled nodules that go deeper into the tissue to provide maximum benefits. Deep tissue roller for intense muscle relief High-profiled nodules designed to go deep into tissue alleviate tight and sore muscles and mobilize muscles for optimal movement Flat surface between the high-profiled nodules provides room for soft tissue displacement and manipulation enhancing the flow of nutrients Recommended for experienced users with very dense muscle tissue For maximum results, use the Carbon Roller before and after physical activity