A one-two punch of foam rolling and vibration, the Trigger Point Grid Vibe Foam Roller helps you relax tight muscles, improve flexibility, and relieve pain through an innovative techy design. Calibrated with a single optimal vibration frequency, the Grid Vibe speeds up muscle recovery and alleviates pain more quickly than your everyday foam roller. It's powered by a cordless, rechargeable battery with AC charger, which holds up to 2 hours of power, and boasts a multi-density surface to help channel blood and oxygen to your muscles when rolling.