I've been looking around for a while now. In the forums, didn't seem to find to much. I'm aware of the outdoor technology yowies and I hear their pretty good.
However, I'm looking for something with maybe a little more insulating. Something that has a wool blend like merino wool. Here's a review done about a bandana with merino: http://www.shayboarder.com/2010/11/review-clast-reversible-merino-neckwarmer.html
The clast one's shown above are only available in a couple countries (not the us). Any ideas/ suggestions for other bandanas/ neck warmers ?