It has not been worn even once, although there is no tag. It is made of a ribbed-like material and is stretchy. Since there is no tag indicating the size, I have listed it as free size, but I believe it is around an M size. [Flat measurements] *Please note that there may be some errors. Shoulder width: approx. 35.5 cm Length: approx. 50.5 cm Width: approx. 37 cm Sleeve length: approx. 25.5 cm There are fold creases on the neck tag (3rd image). Although it is unused, it is a used item, so please refrain from purchasing if you are sensitive. If you have any questions, please comment.