Designed to mimic the feeling of a deep tissue massage, the TriggerPoint(R) 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(R) MBX 2.5'' Massage Ball. FEATURES: Therapeutic and relaxing MBX Massage Ball Targets isolated areas like the calves, piriformis and pecs Made of a firm EVA foam exterior Slip-resistant to ''grip'' onto tissue Acts as a deep tissue massage Measures 2.5'' Height Weight: 1.4 oz. For additional information relating to the Manufacturer's Warranty, please contact 800-446-7587.