Length: 60 cm Width (underarm): Approximately 48 cm This is a perfect fit for me, who wears L size. Long sleeves, dark gray. The cuffs and neckline are comfortable with soft rubber or fabric. There is no feeling of tightness at all, so please rest assured! The fabric is not thick, but soft and light cotton, so I think it can be used all season. When it's cold, you can layer it with Heattech, etc... This item was purchased in the year 2 of Reiwa (2020).