The design for the Headache Hat came to me during one horrible migraine back in 2013 (I had gotten more than my usual headaches and migraines that year with post partum hormones). I was pressing the ice cubes in my ziplock bag into my head - eventually feeling the dripping water in my hair from the melting, and as usual getting annoyed with the plastic crinkling sound when I moved... and there was a gel pack wrap on the pillow that was warm long before. I think I distracted myself from the pain with more than just the numbing ice, but also with thoughts of how this ice pack could work better and hit all these pain points at once...getting the ice to hit and press on those spots where I wanted. By the time that migraine broke, I had so many ideas on this "hat", and the name - Headache Hat - was born right then. In my groggy post migraine state and I told my husband right there, when I figure this all out its going to be amazing! And I went to work right away - using materials I had like my Pilates spandex and plastic coated ice cubes, and my horrible hand sewing... until I got it right. The first time I got to use it with a headache I knew this was going to help many others too (next challenge - figure out how to sell a product!). 3 years later, the design is patented and thousands of people know and believe in the relief this Headache Hat brings.Like I said, I don`t really get headaches and have never had a migraine so I cannot tell you how well they work for that. What I do get is where my head gets sensitive to say loud talking and such, but again, that`s more of me when I`m stressed. Nonetheless, it`s frustrating. That`s why I love this product. This company sent me their Ice Halo - Pink Tie Dye along with their headache hat. I found these are both great because they both include the ice packs within them, but I like the ice halo best. You see, the headache hat I found is more comfortable, for me, when laying down, where as the ice halo is more like a head band and I feel like I can sit at the computer and do my work as well as basic household chores while wearing it. So ice halo is great for when you`re moving about and the headache hat is great for laying or propped up in a chair relaxing. Obviously, the severity of your headache would play a role in which to use as well, I would think. The reason being is the headache hat covers more head space so when your whole head is bothering you, this one would be the way to go. When I get those head irritations, or mini headaches as I call them, they tend to be just near my temples so the ice halo covers that area perfectly for me. So how do they work? The ice packs help relieve the headache pain, but because they`re wrapped up in that nice soft and stretchy material, it doesn`t make you feel like you`re having a brain freeze-melt down.The stretch in the material is just right that it creates tension that aids in calming the headache without cutting off your circulation. So it`s comfortable and it works for my needs perfectly. As an added bonus, I live in the South so it gets terrible hot in the summer. When it comes to doing yard work, these actually help keep you cool, too. I mean, it`s not what they`re intended for, but I figured I`d share because I love items that are versatile! Needless to say, this item was certainly a winner for me and I can honestly recommend it!