MM6 Maison Margiela FW2018 Flocked Denim Jacket

from the Fall/Winter 2018 collection
labeled size 44, and it can fit extra small-medium in men's and medium-extra large in women's (depending on your build/desired fit)
here are the measurements: chest - 19.75” | shoulder width - 16.5” | top to bottom - 21.25” | sleeve length - 27.25”