They look like a nice flannel, but I have been very careful lately to buy only 100% cotton or wool. Reason being I wore a polyester or poly blend flannel when reloading one time, it charged my powder funnels with static electricity which could have been a bad thing. I don't like wearing a heavier jacket or coat when working around the garage especially reloading so only look for natural fibers now. I still have one or 2 blends, and when they wear out that will be that. Yea, I know, just wear the natural when reloading. But I just want to grab and go and not worry about reading labels.
I'm old now and those little things bug me, now GET OFF MY LAWN!