Features a powerful rumbling vibrator inside its grooved silicone wheel for massaging across the contours of the body. The elongated silicone EZ Grip handle allows you to easily roll across the neck back and body providing muscle relief to those hard-to-reach places. As the grooved surface stimulates the outer muscles the vibration awakens the nerves deeper in the body for powerful muscle relief. USB rechargeable. Measures 8 in. long by 2 in. wide.