Don't leave home without the HoMedics Mobile Comfort™ Travel Eye Mask with Vibration Massage. The light-blocking and cushioned fabric design makes this mask soft and comfortable. The mild vibration massage feature aids in soothing away tension and helps you to relax. Built-in over ear headphones, that can be used with the included auxiliary cord, offer convince and eliminates the bulk of wearing an eye mask plus headphones or earbuds. The vibration function is powered by a CR 2032 battery.