I think a Bondi Band is what I got at a race expo last year and I love it, too. I wasn't going to chime in because there's no brand name on it and I didn't know what it is.

My problem is most headbands give me headaches. I can't take much compression on my skull. The thing is so light that when I bought it, I didn't know if it was going to do any good, but it sure does. It isn't an issue for me on the bike, between the helmet, evaporation, and the wind pushing sweat back towards my ears - but it sure is running, and that headband is great.