This shacket with a windmill theme is a L, the shirt brand is American Outdoorsman.
Our comfy and soft shackets are upcycled from coordinating flannel shirts and t-shirts. All materials are prewashed before assembly. Perfect for those cool fall outings. 
Wash according to care label. Cool iron (from back) on design if necessary.
Please check measurements for fit:
center back length-34", back shoulder width-18.5", back width at armpits-22.5"