Cervical Butterfly Pillow Masks AutoSound AutoGel Pads *Individually Sealed Endoscopy AutoSound AutoGel Pads *Individually Sealed *The coupling agent is exactly the correct thickness to maximize the therapeutic effect *AutoSound AutoGel pads eliminate the problems of poor coupling * Non Slip Tread * The specially designed shape of our Butterfly Pillow gives your head and neck the support necessary for a good night s sleep * Helps ease muscles and nerve tension relieves stiff necks pain across the back and shoulders and morning headaches * Great for side or back sleepers * Filled with 100% soft polyester fibers * Machine washable white polycotton cover