Zipped shirt made in heavy canvas weave. And yes, you are right - it will work just as fine as an over-shirt or as a light jacket. We added a garment wash to reveal the weave structure as well as a bit of patina over seams and folds.
Model is wearing size: M
Model's height: 188cm / 6’2”
Model's chest circumference: 95cm / 37,5”