This headband keeps my ears warm during my early morning run.
Very thin material so fits nicely under bike helmet, provides protection it ears and forehead to keep chill away but not too hot to wear on an incline, prefer this headband to a thicker fleece one I own.
I have a pretty small head (wear a small helmet) and this was very loose around my head and ears. Would prefer something smaller with greater stretch. Probably fine for anyone who wears a Med-XL helmet.
Serves its purpose of blocking chilling wind from your ears. Fits easily under my helmet and straps. Does not block sound noticeably.
Good for the transition between nothing to full on headgear. The Windstopper stays put and provides protection in cooler weather. The HiViz color is an added bonus