I was having trouble defining the slouchy coat outside of a “you know it when you see it” context until I found this definition from Vogue, which labeled it “the it-piece of the season” (in 2019). I would argue that especially in France, this style is durable and remains as popular deep into the 2020s as it was five years ago. (For the record, Vogue’s description pegged a slouchy coat as one with “rounded shoulders, baggy sleeves and an overall relaxed fit.”)