Has anybody tried one of the Bluetooth headbands yet? My wife bought one for listening to sleep aids in bed and I think it would work under a half helmet. In fact I tried hers on and it fits under my half helmet but it is way to cold to go for a ride today 10F +/- today.
Here is a link to the kind of product I am talking about.
https://www.amazon.com/dp/B01M5EUN6U...655f37efc8d8_S