Migraine sufferers who have “tried everything” are leaving rave reviews for a relief solution they’re calling a “lifesaver,” the “best cap ever” and “a miracle for headache sufferers.” If you haven’t yet heard of the IceBeanie migraine relief cap, previously featured on “Shark Tank,” you could be majorly missing out on an easy, affordable solution for migraine relief — and that’s not the only use it’s worth buying for, either.

The IceBeanie is a stretchy gel cap designed to cover the entire head like, well, a beanie. It’s both freezable and heatable for headache and tension relief. Unlike other cooling masks or caps you may have seen, this one stands out for its ability to surround the back and top of your head, while you can also pull it down over your eyes, covering as much surface area as your pain demands.

Able to stay cold for over 25 minutes (and even as long as an hour, according to some reviewers), the cap offers mild compression and can block out light to relieve headache symptoms. It’s also useful for hangovers, fevers and inflammation, among other afflictions. Reviewers have even suggested using it for cooling relief when you feel like you’re overheating in the dead of summer, making this a practical item to have on hand year-round.