All-Star Catalyst Cryo-Helmet Brain Cooling System

None

Great idea in theory, but completely fails in reality, thanks to a poor design. First of all, this thing does not get cold. So for that reason alone, it fails. Even if the individual gel cubes were to get cold, there is too much space between them for anything that even remotely resembles full coverage. And only a small area of any given cube touches your head. Speaking of cubes touching your head, this thing is sinfully uncomfortable. Imagine wearing a football helmet lined with hard cubes.Also, the sizing is horrendous. I have a pretty small head, by men's standards, and according to my measurements, the M/L was my size. But it was tiny. It felt like a kid's size. too small to cover the sides of my head, so it more just rested on top like a crown. I exchanged it for the L/XL, which did cover more of the sides of my head, but was still too small to connect the neck velcro without choking myself. Again, I've got a small head. I can't imagine either of these sizes fitting anybody other than women, children, or those with small head syndrome.For $80, I expected this to out-perform the $20 ice headbands, but it was the exact opposite in every regard. So I'm going to buy two of those and call it a day.

Perfect

I have migraines that love to pop up in different parts of my head every day. Some targeted spots, sometimes it’s my whole head! I tried this even with the high price.It’s made up of small gel cubes that freeze. Cool idea. But they freeze into these rock hard ice cubes. First, my head is super sensitive when I get a migraine so putting something that hard right on it hurts. Second, I lay down in a dark & quiet room to help them go away. When I lay with this on, I am not on my soft pillow cradling my head, but lying on ROCKS. There’s no way to get comfortable.I’ll be returning this.

I wear this when I'm working in the heat outside. It keeps me cold, then cool, for about an hour and a half. The velcro packs are a little awkward, I'd envisioned it more like the head cover itself would contain the freezing gel, but they also allow you to swap out velcro pads that are still frozen and keep it cold. Certainly could be good for sports injuries as well, but I get very regular - even routine - use of it as a heat-of-the-day work solution, along with evaporation towels.