Just because the weather doesn't stop you from training, doesn't mean you don't feel the cold. The right clothes make those frigid training sessions infinitely better and that is where the Grotto comes in. With a warm knit wool outer layer and a plush fleece liner, this headband lets you feel the wind in your hair, without feeling the chill on your ears. Technology: Thick knit material traps warm air and dries quickly Fit & Design: Tech wool knit blends non-mulesed wool with recycled polyester for a great weight to warmth ratio Fleece liner adds an extra layer of warmth where you need it most