This 10 oz. Vintage Washed flannel is the heaviest cotton shirt Flyshacker makes!  It's heavy Twill weave construction will help keep you warm all day.  Think of it as a perfect transitional season Shirt Jac.  Vintage washed to make it look like it has been handed down by your grandfather.

10 oz. vintage washed flannel

1 matching chest pocket

Balanced spread collar

Bias cut button front placket