Keeping the ears warm during cool weather rides is essential to late or early season cycling comfort. The West Biking Thermal Headband effectively pulls perspiration from your skin while retaining body heat for maximum comfort. To accomplish this, the Thermal Headband relies on West Biking Thermal fabric. This fabric, an insulating and moisture wicking material with a soft liner, is stretchy to snugly fit against your ears and under helmet straps. The West Biking Thermal Headband has clearance for a ponytail and it has reflective elements for low light safety. It comes in Black and it's one size fits all.