Hi Yolo,
Those KKA pieces are very light. They are a somewhat thin wool/cashmere blend and are unlined with unfinished edges. You should think of it as a heavy cardigan more than a coat. That said, when I handled the fabric at IF in New York City, I was in love with the softness haha. That hooded coat is my favourite piece! If it was lined, I would've gotten it for the winter.
With regards to the Attachment coat, please let me know your size before I start hunting for it

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Attachment x Mercury 10th Anniversary Mods Coat


¥115,000. Sold out already.