evoke du-o features a powerful, rumbling vibrator inside its ribbed silicone wheel for massaging across the contours of the body. There is also a powerful motor in the silicone handle to provide pinpoint, deep tissue massage. The elongated silicone handle allows you to easily roll du-o across the neck, back, and body providing muscle relief to those hard-to-reach places. As the ribbed surface stimulates the outer muscles the vibration awakens the nerves deeper in the body for powerful muscle relief. It is the ultimate in all over body massage!