Ergonomically contoured to the back, spine, and neck, this portable smart vibrating roller is a uniquely versatile rolling solution. Five powerful vibration frequencies and high-traction wave grooves work to deliver just the right angles of pressure to areas in need—releasing soreness, reducing tension, and improving movement. Smart device with Bluetooth® connectivity for total control of your experience. 200-minute battery life, includes USB-A to USB-C charging cable.