Effective Migraine Relief: Headache cap provides deep head relaxation with 360° surrounding gel design,Physical cold therapy shrinks the blood vessel of head through cold, slows down the nerve conduction, relieve your muscular tension and mitigate your pain. the headache hat effectively for releasing headache, swelling, soreness, tension, and sinus headache. New Upgrade Gel Material：The latest matching material gel has greatly improved its temperature sustainability. At the same time, we have thickened the gel to about 0.8cm, which can make its temperature last longer. In addition, compared with the old materials, this environmentally friendly material has no smell Acupressure Relaxation Clip: there is a clip attached for migraine relief. For the best results, wear Aculief on your nondominant hand on the LI4 acupressure point, which is located between the thumb and forefinger, You can use it with the migraine mask.if It is too tight on your hand. Please try to stretch the clip before use. The effect and effective time vary from person to person. Frequent use can usually be alleviated. Hot & Cold Therapy: This Headache Relief Hat can provide cold & hot therapy for you, Use cold therapy and put the ice pack cap in refrigerate for 1-2 hours or freeze for 20 minutes(put the cap in the Incidental clear bag first). The cooling sensation lasts for 15-20 minutes. Use hot therapy just heat it in the microwave for the 40s.You can choose your own way to use it. One Size Fits All: The soft and elastic gel and wrapping provide the migraine cap with super ductility.The one size fits all stretchable design makes it a perfect fit for everyone. the design won't put undo pressure on specific areas like a hard ice pack insert. If you have any quality or any other questions, please contact us at any time and we will resolve it for you as soon as possible.