Release tension with the TriggerPoint(R) Carbon Massage Roller. The ergonomic massage roller features nodules to assist in working through deep tissue knots. Product Features Deep tissue roller for intense muscle relief Releases the toughest, deepest knots, and improves range-of-motion High-profiled nodules designed to go deep into tissue Alleviate tight and sore muscles and mobilize muscles for optimal movement Additional Details One Year Warranty For Manufacturer Defects Only