The term 'hat feature' can be broken down into three crossword solutions: BRIM (4 letters), CREASE (6 letters), and SHORTA (6 letters). A BRIM is the edge of a hat that extends outwards from the crown. It is usually made of stiff material such as felt or straw, and can be either wide or narrow. A CREASE is a fold or indentation in the BRIM of a hat, which is often used to give the hat a more stylish look. Finally, a shorta is a type of hat that has a short BRIM and a flat top. This type of hat is often associated with military personnel and is typically made of wool or cotton.