Comfortable, versatile balaclava. I think it is more appropriate for cool weather (40 - 60 degrees fahrenheit on a motorbike, wearing a half helmet), and a microfleece version for below 40, under the same conditions.  The same goes for a bicycle if you're flying down a mountain.  If you're riding around the city pretty chill, this would probably be sufficient for cooler weather that the aforementioned scenario.

I am thinking of buying a second one.