Vintage NOS Menswear RanchWare Flannel Red Plaid Medium 70s 60s. The collar and sleeves are still stiff from never being washed. I believe it's cotton and it does not feel like wool or acrylic. It is a narrow fit for a vintage medium but has a great unique look. See pictures for condition.

Pit to pit 18.5

Top the bottom 29

Shoulder to cuff end 23.5