Core Foam Roller 18"Massage tight muscles, knots, and kinks to reduce soreness, improve flexibility, and aid in recovery with the solid TriggerPoint CORE Roller. The TriggerPoint CORE Roller is the ideal foam roller for anyone that is new to foam rolling, prefers softer compression, or may be recovering from an injury. The high density EVA foam delivers moderate compression, for a comfortable total body massage. Its GRID pattern technology makes it the only solid foam