TriggerPoint Eco GRID, the original hollow-core foam roller.With a proprietary multi-density foam surface, Eco GRID provides firm compression while channeling the blood and oxygen needed to repair muscles. Patented Distro density zones replicate the sensation of a masseur's hands, helping to relieve tight muscles and enhance recovery. The Eco GRID features a variety of surface widths: high and firm as the fingertips, tubular as the fingers, and low and flat as the palm of the hand. Ideal for beginners and advanced rollers, Eco GRID relieves muscle pain and tension, improves mobility and increases circulation to help users move and feel better. TriggerPoint designs and develops innovative massage therapy tools, including foam rollers, hand rollers, and massage balls, that are ideal for people of all ages, sizes, and athletic abilities.