I'm getting mixed feedback on the flannel here
personally I'm happy with it: this jacket is hard enough to pair and I don't want to be constricted to plain t shirts and such. This felt like a solid choice.
side note a couple months ago I couldn't button this shirt but here we are. (smiling)
Here's the jacket proper might help
Please feel free to suggest things you would pair with the jacket. I'm having tons of fun just pondering what to work it with and it's been a great challenge.