I feel like it's around a size M. Worn twice for a short period. There are no particular issues, and I think you can use it comfortably, but please refrain from purchasing if you are overly concerned about details. Measurements (laid flat): Length: Approximately 50cm Width: Approximately 45cm Sleeve length: Approximately 26cm Shoulder width: Approximately 38cm Please allow for slight variations due to amateur measurements. Discounts available for multiple purchases.