The exact size is unknown because there is no size tag. When listed, the size was estimated to be equivalent to a 70-80 size based on the actual measurements. 【Actual Measurements】 Length: Approximately 37cm Width: Approximately 21cm Sleeve width: Approximately 7cm *Measured flat, by a non-professional. Please compare with your existing clothes before considering. Will be shipped with measures to prevent water damage. Instant purchase is OK.