Vintage Eaton Birkdale flannel like long sleeve button up

Vintage Eaton Birkdale long sleeve button up shirt No material tag Feels more of a wool flannel or poly flannel not 100 % sure . Perfect for fall / winter Great condition It is not royal blue , the color in the last two pictures is more accurate more along the lines of a darker teal . Size small Approx measurements in photos - please note all tape measures are different. Sold as is / no refunds Clean / smoke free