Selling Comme des Garçons short-sleeve cardigan in navy, XL, worn once

I purchased this Comme des Garçons cardigan at an authentic store in Kyoto, but I am selling it after wearing it once because I want to buy a different color. (100% refund available if not authentic) Shipping is available, and in-person pickup in Samsan, Ulsan is also possible. Please contact me anytime. Condition: Almost brand new