This character wears a flat cap.

A flat cap is a rounded men's or women's cap with a small stiff brim in front. Cloths used to make the cap include wool, tweed (most common), and cotton. Less common materials may include leather or linen. Cord flat caps are also worn in various colours. The inside of the cap is usually lined with silk for comfort and warmth. The newsboy cap is a variation of this kind of cap.

Not to be confused with Beret. Unlike berets, a flat cap has a visor (peak).