The Lumen is the best all-around buff. I use it as a beanie or a neck warmer, and it is very versatile and fits great, even on my large noggin. The light merino it uses is warm enough to add some winter protection but not too warm that it couldn't be used to wick sweat or protect from mosquitoes in the summer. I also like the style as it's not super 'flashy' like the Echo ubertubes...but hey, they're meant to be fun summer colours! I only have one Lumen but will buy more down the road.