Material: Made with slow-rebound memory foam for comfortable support.Massage Modes: Features vibration and simulated 3D hand-kneading to ease sore spots.Power: Usually rechargeable and cordless for easy use at home, in the office, or in a car.Rechargeble U-Shaped Travel Neck Massage Pillow | 3 Speed Intensity Modes | Therapeutic Vibration | Cervical Pain Relief | Deep Kneading Massage | Memory Foam