I couldn't tell from the online description whether the shirt would be flannel or a heavy cotton. I was hoping for a heavy cotton, but it is a lightweight cotton. As with many Columbia medium size shirts, the sleeves are long the long side, which is good because my husband has long arms. I like the subtle style and color of the plaid pattern. We haven't washed it yet, so I can't comment on whether it will shrink or wrinkle.