Hands-free design & One fits most: Stretchable ice pack has perfect size for head circumference from 18in(45.7cm) to 25in(63.5cm), for both men and women who suffer from headaches, migraines or facial tension. 360Coverage around head with 8mm thicker and 30% more gel than others', cold for 15-20 minutes. In order to get a longer cold time for pain relief, we recommend that you buy two or more caps to use taking turns. Migraine hat is made from solid gel, which is much better than the liquid gel one, avoid flowing everywhere,without condensation water. The gel is evenly distributed and effect for tension headache, migraine, puffy eyes, stress, fever and tired. Super flexible & comfortable after frozen: Malleable gel filling has a great flexibility even after freezing for a few hours, it still maintains good softness and extremely high fits with the head and face.The compression mask / hat has no hard inserts or magic fasten part, will not put undo pressure on specific areas like a hard ice pack insert. The reusable & wearable ice pack cap can be used for both hot and cold therapy.Just keep it in freezer for 2 hours and it is ready for cold compress when migraine attacks.Or just heat the cap in microwave for 30 seconds with middle power and try the temperature for comfort to use. Fine details: One-piece design provides form fitting 360 degree coverage. V-shape design fits closely to the nose. The hole at the top is great to put your long hair through. High-stretch Lycra fabric, non-rip, without worrying about it sliding off; Extra PE zipper bag for storage; Light-blocking color delivers blackout effects. gel ice wrap hats are made from cutting-edge material & expert-grade cooling gel,non-toxic and no smell, safe enough to wear on bare skin. Natural drug free relief For any quetions during using products, please contact with us, we will help you