PhoneLook Universal anti-migraine cold & heat therapy headband for adults

The wide and large headband features a gel on the inside that can retain both cold and heat for an extended period. It can be pre-cooled in the refrigerator or freezer, or heated in warm water (up to about 80 degrees), providing relief during fever or migraines, as well as on hot summer days or cool winter days. The material of the headband is flexible, allowing it to fit all head sizes, although it is too large for small children. It offers a 360° cooling or warming effect and covers the entire head. The universal size is designed for adults.