Greetings
I love my BMW Airflow jacket but there are times where it flows too well an I get cold. I was shelping an extra jacket but hit on another solution. Picked up another brands jacket liners and viola! Climate control and not too much bulk. Smarter people probably already thought of this but I reckon there's other folks out there as challenged as I.
I found the liners by purchasing a complete jacket used so it was economical as well.