Hyperice Vyper 3 Vibration Therapy Exercise Roll Entire Body (1235911_EA) 1/EAAccelerates your warm up, speeds recovery time, and keeps you moving Three powerful speeds of vibration to massage away tension and loosen up your muscles Has a high torque 34W motor Contoured design helps avoid pressure on your spine and other sensitive areas for a more comfortable roll. Rubber bands help stabilize your roll.