Does anybody wear an aero helmet when the weather is cool? I have done this a few times and really like it. I wear my vortice with the visor and it helps keep my eyes from watering and seems to help my head stay warm.
I specifically bought a short tail aero helmet for winter training to keep my noggin warm, the Ked Aerohelm:
Works a treat.
I’ve seen it done, but it looks ridiculous. Wear a beanie underneath your helmet