Rol-o has a powerful rumbling vibrator in its round silicone wheel that massages the contours of the body. the silicone ez handle and bulbous wheel make rol-o easier to maneuver during various movements when you are on a specific muscle or body part. the surface of rol-o features small nubs of silicone for added texture that stimulate the epidermis during massage, while the powerful vibrations stimulate the nerves in the body deeper, for powerful muscle relaxation. edit your nodes! Jimmyjane evoking vibrating massage wheels are the first massagers to combine rolling massage wheels with deep, rumbling vibrations. the smooth silicone wheels gently roll over the contours of the body to relax and invigorate muscles, while the powerful vibration stimulates nerves to increase circulation and relieve stress. unlike other massagers, the revolutionary wheel design makes it easy to move the massager over the body and roll over each pressure point.