blazer

226x226px|thumb|A single-breasted, reefer-style, navy blue blazer, dressed with brass buttons

thumb|right|250px|A patch logo blazer from historic Ivy style retailer J. Press A blazer is a distinct type of lightweight sports jacket, traditionally made of navy or striped wool or linen. It is typically characterised by metal buttons on the front and sleeves. In terms of formality within Western dress codes, a blazer has a dressier appearance than other sports jackets, yet is seen as less formal than a suit jacket.