Rol-o features a powerful, rumbling vibrator inside its round, silicone wheel for massaging across the contours of the body. The silicone EZ Grip Handle and bulbous wheel makes it easy to maneuver rol-o in different motions when targeting a specific muscle or bodypart. The surface area of rol-o features small silicone nubs, for added texture that stimulate the epidermis during massage, while the powerful vibrations awaken the nerves deeper in the body for powerful muscle relief Features: Multispeed Vibrates Rechargeable Battery (Included)