The oval portrait depicts the upper half of a man's body. He is facing forward with his face slightly turned to the right, featuring long, slightly wavy hair that falls past his shoulders. The man has a neutral expression, a prominent nose, and rounded cheeks. He is dressed in 17th-century English fashion, wearing a dark robe with a white collar, without any visible jewelry or objects. The plain and dark background contrasts with the man's features and clothing. The portrait is framed by an off-white border with an inscription identifying him as Thomas Wriothesley, Earl of Southampton.