This is my second purchase of these. I have given a few to friends to try, and thus far. They also have high praises.

It is really comfortable to wear all day long. Keeps you dry.

[This review was collected as part of a promotion.] Think of this headband as a bandana without all the fuss of tying things. It's built/stitched in such a way that it can be spread over your forehead while maintaining single band width in the back, instead of wearing a tube on your head. The trick is to just put it on your head and adjust its shape after, not the other way around, because that will never happen. The gathered seam can be worn low enough to clear the ratchet of my hardhat, thus avoiding extra squeeze pressure on my head, and the material is thin enough that the added layer under my hat was not significant, and I often forgot that I was wearing it, which is always a good thing. When worn as an evaporative device, I notice a distinct cooling effect, especially when air is flowing. It can feel a little stuffy under my hardhat as it dries out, but if you're sweating, it should self-sustain the evaporation.