Material: The inside of the gel ice cap is composed of expert cooling gel which is odorless, gentle on bare skin, and remains flexible even after extended freezing. It also fits perfectly on the head. You don't need to worry about multiple replacement packs. When compared to a regular ice pack, this one is not only softer and more comfortable, but it also stays cold longer.One-Piece Design: This headache relief hat provides 360 degrees of natural cooling for your head to enjoy all-around cold coverage. It is designed as one piece to wrap around your head easily. This stretchable migraine relief hat has an opening at the top that allows hair to pass through, enabling the cold and pressure to reach the scalp. It is suitable for most head shapes.Hot and Cold Treatment: This migraine ice head wrap cap is reusable and can be used for both cold and hot compress. For cold therapy, refrigerate it for 1â2 hours; for heat therapy, microwave it for 30 seconds. You can have multiple gel ice caps and use them alternately if you need longer relief.Migraine Relief: Using cold and pressure, this migraine relief hat deeply soothes headaches, reduces stress and anxiety, and improves sleep quality. To relieve facial tension and light-sensitive migraines, you can pull the cap down over your eyes to use as an ice mask. It also helps reduce puffiness. A V-shaped design over the nose helps block light and improves shading.Polyamide