Our striking Reflective Merino Collection of headbands and hats has 3M reflective stripes seamlessly knit into luxuriously soft, 100% Merino wool that will keep your ears cozy all winter long. Wool is a natural "tech" fabric that breathes and insulates even when wet. Thin enough to fit under a helmet, (bike or ski!), they keep your ears super cozy, and are compact enough to tuck in a pocket.