As described the fit is oversized with a box-shaped fit and the cuffs and hem slightly tighter to create shape (and to keep the warmth in).
I usually fit a size 10 top but sometimes I have to size up because I have bigger boobs *terrible problem, I know* so I initially ordered a size S (small).
The size S (small) fit me like a womens size 14-16, too big even for an oversized 'look' and the sleeves were super long.
I later ordered a size XS (extra small) and the porridge (sizing) was just right! Feels like a size 12; still loose enough to layer up and of course super snuggly and warm.
Love what you're doing Zorali family, wonderful ecommerce and vision, transparent communication and beautiful products, keep up the great work x