I purchased this at a premium outlet. I am selling it to organize my closet. I have hardly used it since I bought it, and it has been stored in my closet. The size is OT, which is a Japanese size, but I think it is slim. The width is about 43 cm, measured by a layman. (I'm measuring at the armhole, so please understand there may be some error.) Since it is not new, please consider purchasing only if you understand the condition.