Features Specifications:Sell U-shaped Neck Pillow Massage  Unit size30*13.3*24CM Material: CVC Velour Super fine micro beads conform perfectly to provide smooth and total vibrations to the muscles. The built-in Massager has 6 pre programmed cycles for complete relaxing comfort. Studies have shown that a 15-20 minutes nap can enhance alertness, improve focus and give you energy. 3 AAA Batteries Buttons: ON/OFF