Since it says J M, I think it's an M. Please check the size I provided. I've described it. Please do not purchase if you do not understand that this is a used item stored by a private individual. ⚠️ To prevent complaints during shipping, video recording is done for all items. Please purchase only if you understand that this is a used item and are satisfied with it. Please refrain from purchasing if you are a nervous person or if you are looking for a perfect item. Please check the condition in the photos. Please ask for price negotiations or any questions in the comment section. I don't want any trouble, so please carefully check the condition in the photos. I've described it. Please assume that used items may have stains, damage, etc. Please purchase only if you understand and are satisfied. I've described it. If you have any concerns, please ask until you are satisfied. Shoulder width: 46.2 Width: 54.2 Sleeve length: 62 Length: 69 Approximately. 26